Finding the Fourth Proportional to 2,086.20, 2,870.32 and 1,585.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.20 : 2,870.32 = 1,585.92 : x
2. Step 2: Convert to fraction form
   2,086.20/2,870.32 = 1,585.92/x
3. Step 3: Cross multiply
   2,086.20x = 2,870.32 × 1,585.92
4. Step 4: Simplify right side
   2,086.20x = 4,552,097.89
5. Step 5: Solve for x
   x = 4,552,097.89/2,086.20
6. Step 6: Final answer
   x = 2,182.00