Finding the Fourth Proportional to 1,380.22, 1,903.02 and 1,202.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.22 : 1,903.02 = 1,202.52 : x
2. Step 2: Convert to fraction form
   1,380.22/1,903.02 = 1,202.52/x
3. Step 3: Cross multiply
   1,380.22x = 1,903.02 × 1,202.52
4. Step 4: Simplify right side
   1,380.22x = 2,288,419.61
5. Step 5: Solve for x
   x = 2,288,419.61/1,380.22
6. Step 6: Final answer
   x = 1,658.01