Finding the Fourth Proportional to 2,123.59, 2,930.57 and 1,192.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.59 : 2,930.57 = 1,192.09 : x
2. Step 2: Convert to fraction form
   2,123.59/2,930.57 = 1,192.09/x
3. Step 3: Cross multiply
   2,123.59x = 2,930.57 × 1,192.09
4. Step 4: Simplify right side
   2,123.59x = 3,493,503.19
5. Step 5: Solve for x
   x = 3,493,503.19/2,123.59
6. Step 6: Final answer
   x = 1,645.09