Finding the Fourth Proportional to 1,422.86, 1,963.62 and 801.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.86 : 1,963.62 = 801.86 : x
2. Step 2: Convert to fraction form
   1,422.86/1,963.62 = 801.86/x
3. Step 3: Cross multiply
   1,422.86x = 1,963.62 × 801.86
4. Step 4: Simplify right side
   1,422.86x = 1,574,548.33
5. Step 5: Solve for x
   x = 1,574,548.33/1,422.86
6. Step 6: Final answer
   x = 1,106.61