Finding the Fourth Proportional to 1,513.72, 2,088.96 and 924.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.72 : 2,088.96 = 924.31 : x
2. Step 2: Convert to fraction form
   1,513.72/2,088.96 = 924.31/x
3. Step 3: Cross multiply
   1,513.72x = 2,088.96 × 924.31
4. Step 4: Simplify right side
   1,513.72x = 1,930,846.62
5. Step 5: Solve for x
   x = 1,930,846.62/1,513.72
6. Step 6: Final answer
   x = 1,275.56