Finding the Fourth Proportional to 1,061.22, 1,464.37 and 612.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.22 : 1,464.37 = 612.95 : x
2. Step 2: Convert to fraction form
   1,061.22/1,464.37 = 612.95/x
3. Step 3: Cross multiply
   1,061.22x = 1,464.37 × 612.95
4. Step 4: Simplify right side
   1,061.22x = 897,587.72
5. Step 5: Solve for x
   x = 897,587.72/1,061.22
6. Step 6: Final answer
   x = 845.81