Finding the Fourth Proportional to 1,807.94, 2,494.89 and 1,021.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.94 : 2,494.89 = 1,021.97 : x
2. Step 2: Convert to fraction form
   1,807.94/2,494.89 = 1,021.97/x
3. Step 3: Cross multiply
   1,807.94x = 2,494.89 × 1,021.97
4. Step 4: Simplify right side
   1,807.94x = 2,549,702.73
5. Step 5: Solve for x
   x = 2,549,702.73/1,807.94
6. Step 6: Final answer
   x = 1,410.28