Finding the Fourth Proportional to 2,820.48, 3,887.91 and 2,075.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.48 : 3,887.91 = 2,075.28 : x
2. Step 2: Convert to fraction form
   2,820.48/3,887.91 = 2,075.28/x
3. Step 3: Cross multiply
   2,820.48x = 3,887.91 × 2,075.28
4. Step 4: Simplify right side
   2,820.48x = 8,068,501.86
5. Step 5: Solve for x
   x = 8,068,501.86/2,820.48
6. Step 6: Final answer
   x = 2,860.68