Finding the Fourth Proportional to 1,421.62, 2,132.02 and 900.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.62 : 2,132.02 = 900.83 : x
2. Step 2: Convert to fraction form
   1,421.62/2,132.02 = 900.83/x
3. Step 3: Cross multiply
   1,421.62x = 2,132.02 × 900.83
4. Step 4: Simplify right side
   1,421.62x = 1,920,585.32
5. Step 5: Solve for x
   x = 1,920,585.32/1,421.62
6. Step 6: Final answer
   x = 1,350.99