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Finding the Fourth Proportional to 1,221,978.60, 1,832,967.90 and 1,133,405.10

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Solution

The fourth proportional to 1,221,978.60, 1,832,967.90 and 1,133,405.10 is: 1,700,107.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,978.60 : 1,832,967.90 = 1,133,405.10 : x
  2. Step 2: Convert to fraction form
    1,221,978.60/1,832,967.90 = 1,133,405.10/x
  3. Step 3: Cross multiply
    1,221,978.60x = 1,832,967.90 × 1,133,405.10
  4. Step 4: Simplify right side
    1,221,978.60x = 2,077,495,165,996.29
  5. Step 5: Solve for x
    x = 2,077,495,165,996.29/1,221,978.60
  6. Step 6: Final answer
    x = 1,700,107.65

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