Finding the Fourth Proportional to 3,501.20, 4,830.86 and 2,085.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,501.20 : 4,830.86 = 2,085.36 : x
2. Step 2: Convert to fraction form
   3,501.20/4,830.86 = 2,085.36/x
3. Step 3: Cross multiply
   3,501.20x = 4,830.86 × 2,085.36
4. Step 4: Simplify right side
   3,501.20x = 10,074,082.21
5. Step 5: Solve for x
   x = 10,074,082.21/3,501.20
6. Step 6: Final answer
   x = 2,877.32