Finding the Fourth Proportional to 1,619.74, 2,426.82 and 1,275.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619.74 : 2,426.82 = 1,275.28 : x
2. Step 2: Convert to fraction form
   1,619.74/2,426.82 = 1,275.28/x
3. Step 3: Cross multiply
   1,619.74x = 2,426.82 × 1,275.28
4. Step 4: Simplify right side
   1,619.74x = 3,094,875.01
5. Step 5: Solve for x
   x = 3,094,875.01/1,619.74
6. Step 6: Final answer
   x = 1,910.72