Finding the Fourth Proportional to 2,856.84, 4,287.90 and 1,763.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.84 : 4,287.90 = 1,763.34 : x
2. Step 2: Convert to fraction form
   2,856.84/4,287.90 = 1,763.34/x
3. Step 3: Cross multiply
   2,856.84x = 4,287.90 × 1,763.34
4. Step 4: Simplify right side
   2,856.84x = 7,561,025.59
5. Step 5: Solve for x
   x = 7,561,025.59/2,856.84
6. Step 6: Final answer
   x = 2,646.64