Finding the Fourth Proportional to 1,123.02, 1,548.72 and 729.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.02 : 1,548.72 = 729.90 : x
2. Step 2: Convert to fraction form
   1,123.02/1,548.72 = 729.90/x
3. Step 3: Cross multiply
   1,123.02x = 1,548.72 × 729.90
4. Step 4: Simplify right side
   1,123.02x = 1,130,410.73
5. Step 5: Solve for x
   x = 1,130,410.73/1,123.02
6. Step 6: Final answer
   x = 1,006.58