Finding the Fourth Proportional to 2,620.47, 3,914.77 and 1,874.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.47 : 3,914.77 = 1,874.16 : x
2. Step 2: Convert to fraction form
   2,620.47/3,914.77 = 1,874.16/x
3. Step 3: Cross multiply
   2,620.47x = 3,914.77 × 1,874.16
4. Step 4: Simplify right side
   2,620.47x = 7,336,898.41
5. Step 5: Solve for x
   x = 7,336,898.41/2,620.47
6. Step 6: Final answer
   x = 2,799.84