Finding the Fourth Proportional to 1,372.38, 1,892.39 and 929.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.38 : 1,892.39 = 929.52 : x
2. Step 2: Convert to fraction form
   1,372.38/1,892.39 = 929.52/x
3. Step 3: Cross multiply
   1,372.38x = 1,892.39 × 929.52
4. Step 4: Simplify right side
   1,372.38x = 1,759,009.71
5. Step 5: Solve for x
   x = 1,759,009.71/1,372.38
6. Step 6: Final answer
   x = 1,281.72