Finding the Fourth Proportional to 2,847.31, 3,929.37 and 1,588.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,847.31 : 3,929.37 = 1,588.30 : x
2. Step 2: Convert to fraction form
   2,847.31/3,929.37 = 1,588.30/x
3. Step 3: Cross multiply
   2,847.31x = 3,929.37 × 1,588.30
4. Step 4: Simplify right side
   2,847.31x = 6,240,998.72
5. Step 5: Solve for x
   x = 6,240,998.72/2,847.31
6. Step 6: Final answer
   x = 2,191.90