Finding the Fourth Proportional to 2,192.50, 3,290.22 and 1,038.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,192.50 : 3,290.22 = 1,038.34 : x
2. Step 2: Convert to fraction form
   2,192.50/3,290.22 = 1,038.34/x
3. Step 3: Cross multiply
   2,192.50x = 3,290.22 × 1,038.34
4. Step 4: Simplify right side
   2,192.50x = 3,416,367.03
5. Step 5: Solve for x
   x = 3,416,367.03/2,192.50
6. Step 6: Final answer
   x = 1,558.21