Finding the Fourth Proportional to 2,123.82, 2,931.15 and 1,192.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.82 : 2,931.15 = 1,192.32 : x
2. Step 2: Convert to fraction form
   2,123.82/2,931.15 = 1,192.32/x
3. Step 3: Cross multiply
   2,123.82x = 2,931.15 × 1,192.32
4. Step 4: Simplify right side
   2,123.82x = 3,494,868.77
5. Step 5: Solve for x
   x = 3,494,868.77/2,123.82
6. Step 6: Final answer
   x = 1,645.56