Finding the Fourth Proportional to 1,557.69, 2,149.61 and 849.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,557.69 : 2,149.61 = 849.48 : x
2. Step 2: Convert to fraction form
   1,557.69/2,149.61 = 849.48/x
3. Step 3: Cross multiply
   1,557.69x = 2,149.61 × 849.48
4. Step 4: Simplify right side
   1,557.69x = 1,826,046.46
5. Step 5: Solve for x
   x = 1,826,046.46/1,557.69
6. Step 6: Final answer
   x = 1,172.28