Finding the Fourth Proportional to 2,065.31, 3,098.29 and 678.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.31 : 3,098.29 = 678.32 : x
2. Step 2: Convert to fraction form
   2,065.31/3,098.29 = 678.32/x
3. Step 3: Cross multiply
   2,065.31x = 3,098.29 × 678.32
4. Step 4: Simplify right side
   2,065.31x = 2,101,614.89
5. Step 5: Solve for x
   x = 2,101,614.89/2,065.31
6. Step 6: Final answer
   x = 1,017.58