Finding the Fourth Proportional to 1,611.15, 2,223.83 and 948.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,611.15 : 2,223.83 = 948.22 : x
2. Step 2: Convert to fraction form
   1,611.15/2,223.83 = 948.22/x
3. Step 3: Cross multiply
   1,611.15x = 2,223.83 × 948.22
4. Step 4: Simplify right side
   1,611.15x = 2,108,669.78
5. Step 5: Solve for x
   x = 2,108,669.78/1,611.15
6. Step 6: Final answer
   x = 1,308.80