Finding the Fourth Proportional to 1,435.71, 2,155.87 and 1,283.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.71 : 2,155.87 = 1,283.47 : x
2. Step 2: Convert to fraction form
   1,435.71/2,155.87 = 1,283.47/x
3. Step 3: Cross multiply
   1,435.71x = 2,155.87 × 1,283.47
4. Step 4: Simplify right side
   1,435.71x = 2,766,994.47
5. Step 5: Solve for x
   x = 2,766,994.47/1,435.71
6. Step 6: Final answer
   x = 1,927.27