Finding the Fourth Proportional to 1,123.02, 1,548.16 and 790.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.02 : 1,548.16 = 790.41 : x
2. Step 2: Convert to fraction form
   1,123.02/1,548.16 = 790.41/x
3. Step 3: Cross multiply
   1,123.02x = 1,548.16 × 790.41
4. Step 4: Simplify right side
   1,123.02x = 1,223,679.17
5. Step 5: Solve for x
   x = 1,223,679.17/1,123.02
6. Step 6: Final answer
   x = 1,089.63