Finding the Fourth Proportional to 2,748.89, 4,123.96 and 900.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748.89 : 4,123.96 = 900.16 : x
2. Step 2: Convert to fraction form
   2,748.89/4,123.96 = 900.16/x
3. Step 3: Cross multiply
   2,748.89x = 4,123.96 × 900.16
4. Step 4: Simplify right side
   2,748.89x = 3,712,239.53
5. Step 5: Solve for x
   x = 3,712,239.53/2,748.89
6. Step 6: Final answer
   x = 1,350.45