Finding the Fourth Proportional to 1,105.42, 1,525.70 and 657.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.42 : 1,525.70 = 657.39 : x
2. Step 2: Convert to fraction form
   1,105.42/1,525.70 = 657.39/x
3. Step 3: Cross multiply
   1,105.42x = 1,525.70 × 657.39
4. Step 4: Simplify right side
   1,105.42x = 1,002,980.45
5. Step 5: Solve for x
   x = 1,002,980.45/1,105.42
6. Step 6: Final answer
   x = 907.33