Finding the Fourth Proportional to 2,047.15, 3,070.59 and 877.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,047.15 : 3,070.59 = 877.15 : x
2. Step 2: Convert to fraction form
   2,047.15/3,070.59 = 877.15/x
3. Step 3: Cross multiply
   2,047.15x = 3,070.59 × 877.15
4. Step 4: Simplify right side
   2,047.15x = 2,693,368.02
5. Step 5: Solve for x
   x = 2,693,368.02/2,047.15
6. Step 6: Final answer
   x = 1,315.67