Finding the Fourth Proportional to 2,071.82, 2,859.59 and 1,861.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.82 : 2,859.59 = 1,861.63 : x
2. Step 2: Convert to fraction form
   2,071.82/2,859.59 = 1,861.63/x
3. Step 3: Cross multiply
   2,071.82x = 2,859.59 × 1,861.63
4. Step 4: Simplify right side
   2,071.82x = 5,323,474.93
5. Step 5: Solve for x
   x = 5,323,474.93/2,071.82
6. Step 6: Final answer
   x = 2,569.47