Finding the Fourth Proportional to 1,259.81, 1,737.56 and 1,118.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259.81 : 1,737.56 = 1,118.16 : x
2. Step 2: Convert to fraction form
   1,259.81/1,737.56 = 1,118.16/x
3. Step 3: Cross multiply
   1,259.81x = 1,737.56 × 1,118.16
4. Step 4: Simplify right side
   1,259.81x = 1,942,872.89
5. Step 5: Solve for x
   x = 1,942,872.89/1,259.81
6. Step 6: Final answer
   x = 1,542.20