Finding the Fourth Proportional to 1,611.50, 2,223.88 and 948.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,611.50 : 2,223.88 = 948.38 : x
2. Step 2: Convert to fraction form
   1,611.50/2,223.88 = 948.38/x
3. Step 3: Cross multiply
   1,611.50x = 2,223.88 × 948.38
4. Step 4: Simplify right side
   1,611.50x = 2,109,083.31
5. Step 5: Solve for x
   x = 2,109,083.31/1,611.50
6. Step 6: Final answer
   x = 1,308.77