Finding the Fourth Proportional to 1,956.59, 2,935.76 and 861.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,956.59 : 2,935.76 = 861.27 : x
2. Step 2: Convert to fraction form
   1,956.59/2,935.76 = 861.27/x
3. Step 3: Cross multiply
   1,956.59x = 2,935.76 × 861.27
4. Step 4: Simplify right side
   1,956.59x = 2,528,477.71
5. Step 5: Solve for x
   x = 2,528,477.71/1,956.59
6. Step 6: Final answer
   x = 1,292.29