Finding the Fourth Proportional to 1,152.60, 1,729.01 and 372.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.60 : 1,729.01 = 372.72 : x
2. Step 2: Convert to fraction form
   1,152.60/1,729.01 = 372.72/x
3. Step 3: Cross multiply
   1,152.60x = 1,729.01 × 372.72
4. Step 4: Simplify right side
   1,152.60x = 644,436.61
5. Step 5: Solve for x
   x = 644,436.61/1,152.60
6. Step 6: Final answer
   x = 559.12