Finding the Fourth Proportional to 1,559.16, 2,151 and 1,116.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.16 : 2,151 = 1,116.18 : x
2. Step 2: Convert to fraction form
   1,559.16/2,151 = 1,116.18/x
3. Step 3: Cross multiply
   1,559.16x = 2,151 × 1,116.18
4. Step 4: Simplify right side
   1,559.16x = 2,400,903.18
5. Step 5: Solve for x
   x = 2,400,903.18/1,559.16
6. Step 6: Final answer
   x = 1,539.87