Finding the Fourth Proportional to 1,123.88, 1,550.70 and 675.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.88 : 1,550.70 = 675.55 : x
2. Step 2: Convert to fraction form
   1,123.88/1,550.70 = 675.55/x
3. Step 3: Cross multiply
   1,123.88x = 1,550.70 × 675.55
4. Step 4: Simplify right side
   1,123.88x = 1,047,571.51
5. Step 5: Solve for x
   x = 1,047,571.51/1,123.88
6. Step 6: Final answer
   x = 932.10