Finding the Fourth Proportional to 1,181.48, 1,630.42 and 657.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.48 : 1,630.42 = 657.50 : x
2. Step 2: Convert to fraction form
   1,181.48/1,630.42 = 657.50/x
3. Step 3: Cross multiply
   1,181.48x = 1,630.42 × 657.50
4. Step 4: Simplify right side
   1,181.48x = 1,072,001.15
5. Step 5: Solve for x
   x = 1,072,001.15/1,181.48
6. Step 6: Final answer
   x = 907.34