Finding the Fourth Proportional to 2,123.36, 2,930.16 and 1,191.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.36 : 2,930.16 = 1,191.84 : x
2. Step 2: Convert to fraction form
   2,123.36/2,930.16 = 1,191.84/x
3. Step 3: Cross multiply
   2,123.36x = 2,930.16 × 1,191.84
4. Step 4: Simplify right side
   2,123.36x = 3,492,281.89
5. Step 5: Solve for x
   x = 3,492,281.89/2,123.36
6. Step 6: Final answer
   x = 1,644.70