Finding the Fourth Proportional to 1,938.79, 2,675.71 and 1,099.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.79 : 2,675.71 = 1,099.53 : x
2. Step 2: Convert to fraction form
   1,938.79/2,675.71 = 1,099.53/x
3. Step 3: Cross multiply
   1,938.79x = 2,675.71 × 1,099.53
4. Step 4: Simplify right side
   1,938.79x = 2,942,023.42
5. Step 5: Solve for x
   x = 2,942,023.42/1,938.79
6. Step 6: Final answer
   x = 1,517.45