Finding the Fourth Proportional to 2,856.42, 4,283.52 and 1,688.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.42 : 4,283.52 = 1,688.82 : x
2. Step 2: Convert to fraction form
   2,856.42/4,283.52 = 1,688.82/x
3. Step 3: Cross multiply
   2,856.42x = 4,283.52 × 1,688.82
4. Step 4: Simplify right side
   2,856.42x = 7,234,094.25
5. Step 5: Solve for x
   x = 7,234,094.25/2,856.42
6. Step 6: Final answer
   x = 2,532.57