Finding the Fourth Proportional to 2,123.60, 3,186.04 and 736.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.60 : 3,186.04 = 736.88 : x
2. Step 2: Convert to fraction form
   2,123.60/3,186.04 = 736.88/x
3. Step 3: Cross multiply
   2,123.60x = 3,186.04 × 736.88
4. Step 4: Simplify right side
   2,123.60x = 2,347,729.16
5. Step 5: Solve for x
   x = 2,347,729.16/2,123.60
6. Step 6: Final answer
   x = 1,105.54