Finding the Fourth Proportional to 1,767.47, 2,648.16 and 1,217.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,767.47 : 2,648.16 = 1,217.69 : x
2. Step 2: Convert to fraction form
   1,767.47/2,648.16 = 1,217.69/x
3. Step 3: Cross multiply
   1,767.47x = 2,648.16 × 1,217.69
4. Step 4: Simplify right side
   1,767.47x = 3,224,624.71
5. Step 5: Solve for x
   x = 3,224,624.71/1,767.47
6. Step 6: Final answer
   x = 1,824.43