Finding the Fourth Proportional to 2,655.56, 3,983.15 and 900.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,655.56 : 3,983.15 = 900.42 : x
2. Step 2: Convert to fraction form
   2,655.56/3,983.15 = 900.42/x
3. Step 3: Cross multiply
   2,655.56x = 3,983.15 × 900.42
4. Step 4: Simplify right side
   2,655.56x = 3,586,503.42
5. Step 5: Solve for x
   x = 3,586,503.42/2,655.56
6. Step 6: Final answer
   x = 1,350.57