Finding the Fourth Proportional to 1,420.08, 1,959.80 and 799.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.08 : 1,959.80 = 799.12 : x
2. Step 2: Convert to fraction form
   1,420.08/1,959.80 = 799.12/x
3. Step 3: Cross multiply
   1,420.08x = 1,959.80 × 799.12
4. Step 4: Simplify right side
   1,420.08x = 1,566,115.38
5. Step 5: Solve for x
   x = 1,566,115.38/1,420.08
6. Step 6: Final answer
   x = 1,102.84