Finding the Fourth Proportional to 2,123.60, 2,930.46 and 1,192.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.60 : 2,930.46 = 1,192.10 : x
2. Step 2: Convert to fraction form
   2,123.60/2,930.46 = 1,192.10/x
3. Step 3: Cross multiply
   2,123.60x = 2,930.46 × 1,192.10
4. Step 4: Simplify right side
   2,123.60x = 3,493,401.37
5. Step 5: Solve for x
   x = 3,493,401.37/2,123.60
6. Step 6: Final answer
   x = 1,645.04