Finding the Fourth Proportional to 2,074.93, 3,112.30 and 842.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.93 : 3,112.30 = 842.02 : x
2. Step 2: Convert to fraction form
   2,074.93/3,112.30 = 842.02/x
3. Step 3: Cross multiply
   2,074.93x = 3,112.30 × 842.02
4. Step 4: Simplify right side
   2,074.93x = 2,620,618.85
5. Step 5: Solve for x
   x = 2,620,618.85/2,074.93
6. Step 6: Final answer
   x = 1,262.99