Finding the Fourth Proportional to 1,955.50, 2,698.59 and 1,071.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,955.50 : 2,698.59 = 1,071.31 : x
2. Step 2: Convert to fraction form
   1,955.50/2,698.59 = 1,071.31/x
3. Step 3: Cross multiply
   1,955.50x = 2,698.59 × 1,071.31
4. Step 4: Simplify right side
   1,955.50x = 2,891,026.45
5. Step 5: Solve for x
   x = 2,891,026.45/1,955.50
6. Step 6: Final answer
   x = 1,478.41