Finding the Fourth Proportional to 2,132.56, 3,199.38 and 900.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.56 : 3,199.38 = 900.28 : x
2. Step 2: Convert to fraction form
   2,132.56/3,199.38 = 900.28/x
3. Step 3: Cross multiply
   2,132.56x = 3,199.38 × 900.28
4. Step 4: Simplify right side
   2,132.56x = 2,880,337.83
5. Step 5: Solve for x
   x = 2,880,337.83/2,132.56
6. Step 6: Final answer
   x = 1,350.65