Finding the Fourth Proportional to 2,547.39, 3,820.77 and 698.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.39 : 3,820.77 = 698.67 : x
2. Step 2: Convert to fraction form
   2,547.39/3,820.77 = 698.67/x
3. Step 3: Cross multiply
   2,547.39x = 3,820.77 × 698.67
4. Step 4: Simplify right side
   2,547.39x = 2,669,457.38
5. Step 5: Solve for x
   x = 2,669,457.38/2,547.39
6. Step 6: Final answer
   x = 1,047.92