Finding the Fourth Proportional to 1,116.88, 1,541.31 and 619.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.88 : 1,541.31 = 619.53 : x
2. Step 2: Convert to fraction form
   1,116.88/1,541.31 = 619.53/x
3. Step 3: Cross multiply
   1,116.88x = 1,541.31 × 619.53
4. Step 4: Simplify right side
   1,116.88x = 954,887.78
5. Step 5: Solve for x
   x = 954,887.78/1,116.88
6. Step 6: Final answer
   x = 854.96