Finding the Fourth Proportional to 2,057.32, 3,086.15 and 670.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.32 : 3,086.15 = 670.63 : x
2. Step 2: Convert to fraction form
   2,057.32/3,086.15 = 670.63/x
3. Step 3: Cross multiply
   2,057.32x = 3,086.15 × 670.63
4. Step 4: Simplify right side
   2,057.32x = 2,069,664.77
5. Step 5: Solve for x
   x = 2,069,664.77/2,057.32
6. Step 6: Final answer
   x = 1,006.00