Finding the Fourth Proportional to 1,422.10, 1,962.52 and 801.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.10 : 1,962.52 = 801.10 : x
2. Step 2: Convert to fraction form
   1,422.10/1,962.52 = 801.10/x
3. Step 3: Cross multiply
   1,422.10x = 1,962.52 × 801.10
4. Step 4: Simplify right side
   1,422.10x = 1,572,174.77
5. Step 5: Solve for x
   x = 1,572,174.77/1,422.10
6. Step 6: Final answer
   x = 1,105.53