Finding the Fourth Proportional to 1,955.40, 2,698.42 and 1,116.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,955.40 : 2,698.42 = 1,116.15 : x
2. Step 2: Convert to fraction form
   1,955.40/2,698.42 = 1,116.15/x
3. Step 3: Cross multiply
   1,955.40x = 2,698.42 × 1,116.15
4. Step 4: Simplify right side
   1,955.40x = 3,011,841.48
5. Step 5: Solve for x
   x = 3,011,841.48/1,955.40
6. Step 6: Final answer
   x = 1,540.27