Finding the Fourth Proportional to 2,123.76, 2,931.04 and 1,192.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.76 : 2,931.04 = 1,192.26 : x
2. Step 2: Convert to fraction form
   2,123.76/2,931.04 = 1,192.26/x
3. Step 3: Cross multiply
   2,123.76x = 2,931.04 × 1,192.26
4. Step 4: Simplify right side
   2,123.76x = 3,494,561.75
5. Step 5: Solve for x
   x = 3,494,561.75/2,123.76
6. Step 6: Final answer
   x = 1,645.46