Finding the Fourth Proportional to 2,065.18, 3,097.62 and 678.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.18 : 3,097.62 = 678.50 : x
2. Step 2: Convert to fraction form
   2,065.18/3,097.62 = 678.50/x
3. Step 3: Cross multiply
   2,065.18x = 3,097.62 × 678.50
4. Step 4: Simplify right side
   2,065.18x = 2,101,735.17
5. Step 5: Solve for x
   x = 2,101,735.17/2,065.18
6. Step 6: Final answer
   x = 1,017.70