Finding the Fourth Proportional to 1,956.09, 2,699.39 and 1,071.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,956.09 : 2,699.39 = 1,071.89 : x
2. Step 2: Convert to fraction form
   1,956.09/2,699.39 = 1,071.89/x
3. Step 3: Cross multiply
   1,956.09x = 2,699.39 × 1,071.89
4. Step 4: Simplify right side
   1,956.09x = 2,893,449.15
5. Step 5: Solve for x
   x = 2,893,449.15/1,956.09
6. Step 6: Final answer
   x = 1,479.20