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Finding the Fourth Proportional to 1,978,354.22, 2,965,981.08 and 781,172.66

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Solution

The fourth proportional to 1,978,354.22, 2,965,981.08 and 781,172.66 is: 1,171,146.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,354.22 : 2,965,981.08 = 781,172.66 : x
  2. Step 2: Convert to fraction form
    1,978,354.22/2,965,981.08 = 781,172.66/x
  3. Step 3: Cross multiply
    1,978,354.22x = 2,965,981.08 × 781,172.66
  4. Step 4: Simplify right side
    1,978,354.22x = 2,316,943,329,773.27
  5. Step 5: Solve for x
    x = 2,316,943,329,773.27/1,978,354.22
  6. Step 6: Final answer
    x = 1,171,146.86

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