Finding the Fourth Proportional to 2,731.98, 4,100.00 and 1,272.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,731.98 : 4,100.00 = 1,272.15 : x
2. Step 2: Convert to fraction form
   2,731.98/4,100.00 = 1,272.15/x
3. Step 3: Cross multiply
   2,731.98x = 4,100.00 × 1,272.15
4. Step 4: Simplify right side
   2,731.98x = 5,215,808.64
5. Step 5: Solve for x
   x = 5,215,808.64/2,731.98
6. Step 6: Final answer
   x = 1,909.17