Finding the Fourth Proportional to 1,137.43, 1,562.85 and 904.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.43 : 1,562.85 = 904.15 : x
2. Step 2: Convert to fraction form
   1,137.43/1,562.85 = 904.15/x
3. Step 3: Cross multiply
   1,137.43x = 1,562.85 × 904.15
4. Step 4: Simplify right side
   1,137.43x = 1,413,050.83
5. Step 5: Solve for x
   x = 1,413,050.83/1,137.43
6. Step 6: Final answer
   x = 1,242.32