Finding the Fourth Proportional to 1,016.98, 1,532.55 and 919.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.98 : 1,532.55 = 919.55 : x
2. Step 2: Convert to fraction form
   1,016.98/1,532.55 = 919.55/x
3. Step 3: Cross multiply
   1,016.98x = 1,532.55 × 919.55
4. Step 4: Simplify right side
   1,016.98x = 1,409,256.35
5. Step 5: Solve for x
   x = 1,409,256.35/1,016.98
6. Step 6: Final answer
   x = 1,385.73