Finding the Fourth Proportional to 1,845.42, 2,545.37 and 1,098.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,845.42 : 2,545.37 = 1,098.80 : x
2. Step 2: Convert to fraction form
   1,845.42/2,545.37 = 1,098.80/x
3. Step 3: Cross multiply
   1,845.42x = 2,545.37 × 1,098.80
4. Step 4: Simplify right side
   1,845.42x = 2,796,839.83
5. Step 5: Solve for x
   x = 2,796,839.83/1,845.42
6. Step 6: Final answer
   x = 1,515.56