Finding the Fourth Proportional to 2,123.13, 2,930.18 and 1,191.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.13 : 2,930.18 = 1,191.63 : x
2. Step 2: Convert to fraction form
   2,123.13/2,930.18 = 1,191.63/x
3. Step 3: Cross multiply
   2,123.13x = 2,930.18 × 1,191.63
4. Step 4: Simplify right side
   2,123.13x = 3,491,690.39
5. Step 5: Solve for x
   x = 3,491,690.39/2,123.13
6. Step 6: Final answer
   x = 1,644.60