Finding the Fourth Proportional to 1,116.95, 1,541.33 and 619.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.95 : 1,541.33 = 619.55 : x
2. Step 2: Convert to fraction form
   1,116.95/1,541.33 = 619.55/x
3. Step 3: Cross multiply
   1,116.95x = 1,541.33 × 619.55
4. Step 4: Simplify right side
   1,116.95x = 954,920.20
5. Step 5: Solve for x
   x = 954,920.20/1,116.95
6. Step 6: Final answer
   x = 854.94