Finding the Fourth Proportional to 1,427.83, 1,970.50 and 798.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.83 : 1,970.50 = 798.56 : x
2. Step 2: Convert to fraction form
   1,427.83/1,970.50 = 798.56/x
3. Step 3: Cross multiply
   1,427.83x = 1,970.50 × 798.56
4. Step 4: Simplify right side
   1,427.83x = 1,573,562.48
5. Step 5: Solve for x
   x = 1,573,562.48/1,427.83
6. Step 6: Final answer
   x = 1,102.07