Finding the Fourth Proportional to 1,181.52, 1,630.50 and 657.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.52 : 1,630.50 = 657.57 : x
2. Step 2: Convert to fraction form
   1,181.52/1,630.50 = 657.57/x
3. Step 3: Cross multiply
   1,181.52x = 1,630.50 × 657.57
4. Step 4: Simplify right side
   1,181.52x = 1,072,167.89
5. Step 5: Solve for x
   x = 1,072,167.89/1,181.52
6. Step 6: Final answer
   x = 907.45