Finding the Fourth Proportional to 1,086.61, 1,622.04 and 955.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.61 : 1,622.04 = 955.25 : x
2. Step 2: Convert to fraction form
   1,086.61/1,622.04 = 955.25/x
3. Step 3: Cross multiply
   1,086.61x = 1,622.04 × 955.25
4. Step 4: Simplify right side
   1,086.61x = 1,549,445.60
5. Step 5: Solve for x
   x = 1,549,445.60/1,086.61
6. Step 6: Final answer
   x = 1,425.95