Finding the Fourth Proportional to 1,116.76, 1,541.12 and 619.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.76 : 1,541.12 = 619.38 : x
2. Step 2: Convert to fraction form
   1,116.76/1,541.12 = 619.38/x
3. Step 3: Cross multiply
   1,116.76x = 1,541.12 × 619.38
4. Step 4: Simplify right side
   1,116.76x = 954,538.91
5. Step 5: Solve for x
   x = 954,538.91/1,116.76
6. Step 6: Final answer
   x = 854.74