Finding the Fourth Proportional to 1,955.87, 2,699.16 and 1,071.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,955.87 : 2,699.16 = 1,071.72 : x
2. Step 2: Convert to fraction form
   1,955.87/2,699.16 = 1,071.72/x
3. Step 3: Cross multiply
   1,955.87x = 2,699.16 × 1,071.72
4. Step 4: Simplify right side
   1,955.87x = 2,892,738.40
5. Step 5: Solve for x
   x = 2,892,738.40/1,955.87
6. Step 6: Final answer
   x = 1,479.00