Finding the Fourth Proportional to 1,427.99, 1,970.51 and 798.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.99 : 1,970.51 = 798.47 : x
2. Step 2: Convert to fraction form
   1,427.99/1,970.51 = 798.47/x
3. Step 3: Cross multiply
   1,427.99x = 1,970.51 × 798.47
4. Step 4: Simplify right side
   1,427.99x = 1,573,393.12
5. Step 5: Solve for x
   x = 1,573,393.12/1,427.99
6. Step 6: Final answer
   x = 1,101.82