Finding the Fourth Proportional to 1,665.10, 2,297.03 and 1,098.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.10 : 2,297.03 = 1,098.53 : x
2. Step 2: Convert to fraction form
   1,665.10/2,297.03 = 1,098.53/x
3. Step 3: Cross multiply
   1,665.10x = 2,297.03 × 1,098.53
4. Step 4: Simplify right side
   1,665.10x = 2,523,356.37
5. Step 5: Solve for x
   x = 2,523,356.37/1,665.10
6. Step 6: Final answer
   x = 1,515.44