Finding the Fourth Proportional to 1,014.98, 1,400.74 and 572.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,014.98 : 1,400.74 = 572.72 : x
2. Step 2: Convert to fraction form
   1,014.98/1,400.74 = 572.72/x
3. Step 3: Cross multiply
   1,014.98x = 1,400.74 × 572.72
4. Step 4: Simplify right side
   1,014.98x = 802,225.45
5. Step 5: Solve for x
   x = 802,225.45/1,014.98
6. Step 6: Final answer
   x = 790.39