Finding the Fourth Proportional to 2,065.17, 3,098.40 and 678.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.17 : 3,098.40 = 678.53 : x
2. Step 2: Convert to fraction form
   2,065.17/3,098.40 = 678.53/x
3. Step 3: Cross multiply
   2,065.17x = 3,098.40 × 678.53
4. Step 4: Simplify right side
   2,065.17x = 2,102,341.86
5. Step 5: Solve for x
   x = 2,102,341.86/2,065.17
6. Step 6: Final answer
   x = 1,018.00