Finding the Fourth Proportional to 2,748.90, 4,123.62 and 899.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748.90 : 4,123.62 = 899.94 : x
2. Step 2: Convert to fraction form
   2,748.90/4,123.62 = 899.94/x
3. Step 3: Cross multiply
   2,748.90x = 4,123.62 × 899.94
4. Step 4: Simplify right side
   2,748.90x = 3,711,010.58
5. Step 5: Solve for x
   x = 3,711,010.58/2,748.90
6. Step 6: Final answer
   x = 1,350.00