Finding the Fourth Proportional to 1,625.74, 2,435.82 and 1,281.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,625.74 : 2,435.82 = 1,281.28 : x
2. Step 2: Convert to fraction form
   1,625.74/2,435.82 = 1,281.28/x
3. Step 3: Cross multiply
   1,625.74x = 2,435.82 × 1,281.28
4. Step 4: Simplify right side
   1,625.74x = 3,120,967.45
5. Step 5: Solve for x
   x = 3,120,967.45/1,625.74
6. Step 6: Final answer
   x = 1,919.72