Finding the Fourth Proportional to 2,123.43, 2,930.31 and 1,191.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.43 : 2,930.31 = 1,191.93 : x
2. Step 2: Convert to fraction form
   2,123.43/2,930.31 = 1,191.93/x
3. Step 3: Cross multiply
   2,123.43x = 2,930.31 × 1,191.93
4. Step 4: Simplify right side
   2,123.43x = 3,492,724.40
5. Step 5: Solve for x
   x = 3,492,724.40/2,123.43
6. Step 6: Final answer
   x = 1,644.85