Finding the Fourth Proportional to 1,956.15, 2,917.89 and 1,771.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,956.15 : 2,917.89 = 1,771.47 : x
2. Step 2: Convert to fraction form
   1,956.15/2,917.89 = 1,771.47/x
3. Step 3: Cross multiply
   1,956.15x = 2,917.89 × 1,771.47
4. Step 4: Simplify right side
   1,956.15x = 5,168,954.60
5. Step 5: Solve for x
   x = 5,168,954.60/1,956.15
6. Step 6: Final answer
   x = 2,642.41