Finding the Fourth Proportional to 1,137.88, 1,705.72 and 624.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.88 : 1,705.72 = 624.52 : x
2. Step 2: Convert to fraction form
   1,137.88/1,705.72 = 624.52/x
3. Step 3: Cross multiply
   1,137.88x = 1,705.72 × 624.52
4. Step 4: Simplify right side
   1,137.88x = 1,065,256.25
5. Step 5: Solve for x
   x = 1,065,256.25/1,137.88
6. Step 6: Final answer
   x = 936.18