Finding the Fourth Proportional to 1,173.98, 1,761.20 and 524.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.98 : 1,761.20 = 524.72 : x
2. Step 2: Convert to fraction form
   1,173.98/1,761.20 = 524.72/x
3. Step 3: Cross multiply
   1,173.98x = 1,761.20 × 524.72
4. Step 4: Simplify right side
   1,173.98x = 924,142.58
5. Step 5: Solve for x
   x = 924,142.58/1,173.98
6. Step 6: Final answer
   x = 787.19