Finding the Fourth Proportional to 1,427.90, 1,970.53 and 798.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.90 : 1,970.53 = 798.49 : x
2. Step 2: Convert to fraction form
   1,427.90/1,970.53 = 798.49/x
3. Step 3: Cross multiply
   1,427.90x = 1,970.53 × 798.49
4. Step 4: Simplify right side
   1,427.90x = 1,573,441.58
5. Step 5: Solve for x
   x = 1,573,441.58/1,427.90
6. Step 6: Final answer
   x = 1,101.93