Finding the Fourth Proportional to 1,123.74, 1,677.15 and 1,030.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.74 : 1,677.15 = 1,030.86 : x
2. Step 2: Convert to fraction form
   1,123.74/1,677.15 = 1,030.86/x
3. Step 3: Cross multiply
   1,123.74x = 1,677.15 × 1,030.86
4. Step 4: Simplify right side
   1,123.74x = 1,728,906.85
5. Step 5: Solve for x
   x = 1,728,906.85/1,123.74
6. Step 6: Final answer
   x = 1,538.53