Finding the Fourth Proportional to 2,530.71, 3,491.30 and 1,585.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,530.71 : 3,491.30 = 1,585.86 : x
2. Step 2: Convert to fraction form
   2,530.71/3,491.30 = 1,585.86/x
3. Step 3: Cross multiply
   2,530.71x = 3,491.30 × 1,585.86
4. Step 4: Simplify right side
   2,530.71x = 5,536,703.89
5. Step 5: Solve for x
   x = 5,536,703.89/2,530.71
6. Step 6: Final answer
   x = 2,187.81