Finding the Fourth Proportional to 2,086.04, 3,130.60 and 1,539.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.04 : 3,130.60 = 1,539.70 : x
2. Step 2: Convert to fraction form
   2,086.04/3,130.60 = 1,539.70/x
3. Step 3: Cross multiply
   2,086.04x = 3,130.60 × 1,539.70
4. Step 4: Simplify right side
   2,086.04x = 4,820,184.82
5. Step 5: Solve for x
   x = 4,820,184.82/2,086.04
6. Step 6: Final answer
   x = 2,310.69