Finding the Fourth Proportional to 2,123.18, 2,929.82 and 1,191.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.18 : 2,929.82 = 1,191.50 : x
2. Step 2: Convert to fraction form
   2,123.18/2,929.82 = 1,191.50/x
3. Step 3: Cross multiply
   2,123.18x = 2,929.82 × 1,191.50
4. Step 4: Simplify right side
   2,123.18x = 3,490,880.53
5. Step 5: Solve for x
   x = 3,490,880.53/2,123.18
6. Step 6: Final answer
   x = 1,644.18