Finding the Fourth Proportional to 1,085.22, 1,625.67 and 948.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.22 : 1,625.67 = 948.42 : x
2. Step 2: Convert to fraction form
   1,085.22/1,625.67 = 948.42/x
3. Step 3: Cross multiply
   1,085.22x = 1,625.67 × 948.42
4. Step 4: Simplify right side
   1,085.22x = 1,541,817.94
5. Step 5: Solve for x
   x = 1,541,817.94/1,085.22
6. Step 6: Final answer
   x = 1,420.74