Finding the Fourth Proportional to 2,081.79, 3,123.09 and 695.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.79 : 3,123.09 = 695.57 : x
2. Step 2: Convert to fraction form
   2,081.79/3,123.09 = 695.57/x
3. Step 3: Cross multiply
   2,081.79x = 3,123.09 × 695.57
4. Step 4: Simplify right side
   2,081.79x = 2,172,312.10
5. Step 5: Solve for x
   x = 2,172,312.10/2,081.79
6. Step 6: Final answer
   x = 1,043.48