Finding the Fourth Proportional to 1,382.96, 2,075.34 and 1,271.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.96 : 2,075.34 = 1,271.72 : x
2. Step 2: Convert to fraction form
   1,382.96/2,075.34 = 1,271.72/x
3. Step 3: Cross multiply
   1,382.96x = 2,075.34 × 1,271.72
4. Step 4: Simplify right side
   1,382.96x = 2,639,251.38
5. Step 5: Solve for x
   x = 2,639,251.38/1,382.96
6. Step 6: Final answer
   x = 1,908.41