Finding the Fourth Proportional to 1,898.16, 2,618.16 and 1,150.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.16 : 2,618.16 = 1,150.80 : x
2. Step 2: Convert to fraction form
   1,898.16/2,618.16 = 1,150.80/x
3. Step 3: Cross multiply
   1,898.16x = 2,618.16 × 1,150.80
4. Step 4: Simplify right side
   1,898.16x = 3,012,978.53
5. Step 5: Solve for x
   x = 3,012,978.53/1,898.16
6. Step 6: Final answer
   x = 1,587.32