Finding the Fourth Proportional to 1,116.96, 1,541.34 and 619.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.96 : 1,541.34 = 619.57 : x
2. Step 2: Convert to fraction form
   1,116.96/1,541.34 = 619.57/x
3. Step 3: Cross multiply
   1,116.96x = 1,541.34 × 619.57
4. Step 4: Simplify right side
   1,116.96x = 954,968.02
5. Step 5: Solve for x
   x = 954,968.02/1,116.96
6. Step 6: Final answer
   x = 854.97