Finding the Fourth Proportional to 1,427.59, 1,970.03 and 798.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.59 : 1,970.03 = 798.11 : x
2. Step 2: Convert to fraction form
   1,427.59/1,970.03 = 798.11/x
3. Step 3: Cross multiply
   1,427.59x = 1,970.03 × 798.11
4. Step 4: Simplify right side
   1,427.59x = 1,572,309.01
5. Step 5: Solve for x
   x = 1,572,309.01/1,427.59
6. Step 6: Final answer
   x = 1,101.38