Finding the Fourth Proportional to 2,749.55, 4,123.17 and 900.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,749.55 : 4,123.17 = 900.18 : x
2. Step 2: Convert to fraction form
   2,749.55/4,123.17 = 900.18/x
3. Step 3: Cross multiply
   2,749.55x = 4,123.17 × 900.18
4. Step 4: Simplify right side
   2,749.55x = 3,711,595.17
5. Step 5: Solve for x
   x = 3,711,595.17/2,749.55
6. Step 6: Final answer
   x = 1,349.89