Finding the Fourth Proportional to 1,016.04, 1,402.19 and 617.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.04 : 1,402.19 = 617.98 : x
2. Step 2: Convert to fraction form
   1,016.04/1,402.19 = 617.98/x
3. Step 3: Cross multiply
   1,016.04x = 1,402.19 × 617.98
4. Step 4: Simplify right side
   1,016.04x = 866,518.78
5. Step 5: Solve for x
   x = 866,518.78/1,016.04
6. Step 6: Final answer
   x = 852.84