Finding the Fourth Proportional to 1,116.63, 1,540.82 and 619.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.63 : 1,540.82 = 619.22 : x
2. Step 2: Convert to fraction form
   1,116.63/1,540.82 = 619.22/x
3. Step 3: Cross multiply
   1,116.63x = 1,540.82 × 619.22
4. Step 4: Simplify right side
   1,116.63x = 954,111.96
5. Step 5: Solve for x
   x = 954,111.96/1,116.63
6. Step 6: Final answer
   x = 854.46