Finding the Fourth Proportional to 2,071.97, 2,856.07 and 1,407.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.97 : 2,856.07 = 1,407.67 : x
2. Step 2: Convert to fraction form
   2,071.97/2,856.07 = 1,407.67/x
3. Step 3: Cross multiply
   2,071.97x = 2,856.07 × 1,407.67
4. Step 4: Simplify right side
   2,071.97x = 4,020,404.06
5. Step 5: Solve for x
   x = 4,020,404.06/2,071.97
6. Step 6: Final answer
   x = 1,940.38