Finding the Fourth Proportional to 1,341.87, 1,851.72 and 752.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.87 : 1,851.72 = 752.40 : x
2. Step 2: Convert to fraction form
   1,341.87/1,851.72 = 752.40/x
3. Step 3: Cross multiply
   1,341.87x = 1,851.72 × 752.40
4. Step 4: Simplify right side
   1,341.87x = 1,393,234.13
5. Step 5: Solve for x
   x = 1,393,234.13/1,341.87
6. Step 6: Final answer
   x = 1,038.28