Finding the Fourth Proportional to 2,071.17, 2,856.77 and 1,406.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.17 : 2,856.77 = 1,406.87 : x
2. Step 2: Convert to fraction form
   2,071.17/2,856.77 = 1,406.87/x
3. Step 3: Cross multiply
   2,071.17x = 2,856.77 × 1,406.87
4. Step 4: Simplify right side
   2,071.17x = 4,019,098.68
5. Step 5: Solve for x
   x = 4,019,098.68/2,071.17
6. Step 6: Final answer
   x = 1,940.50