Finding the Fourth Proportional to 2,856.25, 4,284.72 and 1,006.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.25 : 4,284.72 = 1,006.99 : x
2. Step 2: Convert to fraction form
   2,856.25/4,284.72 = 1,006.99/x
3. Step 3: Cross multiply
   2,856.25x = 4,284.72 × 1,006.99
4. Step 4: Simplify right side
   2,856.25x = 4,314,648.77
5. Step 5: Solve for x
   x = 4,314,648.77/2,856.25
6. Step 6: Final answer
   x = 1,510.60