Finding the Fourth Proportional to 2,748.86, 4,123.62 and 900.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748.86 : 4,123.62 = 900.18 : x
2. Step 2: Convert to fraction form
   2,748.86/4,123.62 = 900.18/x
3. Step 3: Cross multiply
   2,748.86x = 4,123.62 × 900.18
4. Step 4: Simplify right side
   2,748.86x = 3,712,000.25
5. Step 5: Solve for x
   x = 3,712,000.25/2,748.86
6. Step 6: Final answer
   x = 1,350.38