Finding the Fourth Proportional to 722.01, 1,081.55 and 584.72

Step by Step Solution

1. Step 1: Write the proportion equation
   722.01 : 1,081.55 = 584.72 : x
2. Step 2: Convert to fraction form
   722.01/1,081.55 = 584.72/x
3. Step 3: Cross multiply
   722.01x = 1,081.55 × 584.72
4. Step 4: Simplify right side
   722.01x = 632,404.03
5. Step 5: Solve for x
   x = 632,404.03/722.01
6. Step 6: Final answer
   x = 875.89