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Finding the Fourth Proportional to 1,433.92, 1,978.68 and 910.12

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Solution

The fourth proportional to 1,433.92, 1,978.68 and 910.12 is: 1,255.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.92 : 1,978.68 = 910.12 : x
  2. Step 2: Convert to fraction form
    1,433.92/1,978.68 = 910.12/x
  3. Step 3: Cross multiply
    1,433.92x = 1,978.68 × 910.12
  4. Step 4: Simplify right side
    1,433.92x = 1,800,836.24
  5. Step 5: Solve for x
    x = 1,800,836.24/1,433.92
  6. Step 6: Final answer
    x = 1,255.88

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