Finding the Fourth Proportional to 1,427.56, 1,970.10 and 798.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.56 : 1,970.10 = 798.10 : x
2. Step 2: Convert to fraction form
   1,427.56/1,970.10 = 798.10/x
3. Step 3: Cross multiply
   1,427.56x = 1,970.10 × 798.10
4. Step 4: Simplify right side
   1,427.56x = 1,572,331.88
5. Step 5: Solve for x
   x = 1,572,331.88/1,427.56
6. Step 6: Final answer
   x = 1,101.41