Finding the Fourth Proportional to 2,123.06, 2,929.65 and 1,191.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.06 : 2,929.65 = 1,191.38 : x
2. Step 2: Convert to fraction form
   2,123.06/2,929.65 = 1,191.38/x
3. Step 3: Cross multiply
   2,123.06x = 2,929.65 × 1,191.38
4. Step 4: Simplify right side
   2,123.06x = 3,490,326.42
5. Step 5: Solve for x
   x = 3,490,326.42/2,123.06
6. Step 6: Final answer
   x = 1,644.01