Finding the Fourth Proportional to 1,417.76, 2,120.76 and 1,282.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.76 : 2,120.76 = 1,282.76 : x
2. Step 2: Convert to fraction form
   1,417.76/2,120.76 = 1,282.76/x
3. Step 3: Cross multiply
   1,417.76x = 2,120.76 × 1,282.76
4. Step 4: Simplify right side
   1,417.76x = 2,720,426.10
5. Step 5: Solve for x
   x = 2,720,426.10/1,417.76
6. Step 6: Final answer
   x = 1,918.82