Finding the Fourth Proportional to 1,123.04, 1,686.12 and 735.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.04 : 1,686.12 = 735.68 : x
2. Step 2: Convert to fraction form
   1,123.04/1,686.12 = 735.68/x
3. Step 3: Cross multiply
   1,123.04x = 1,686.12 × 735.68
4. Step 4: Simplify right side
   1,123.04x = 1,240,444.76
5. Step 5: Solve for x
   x = 1,240,444.76/1,123.04
6. Step 6: Final answer
   x = 1,104.54