Finding the Fourth Proportional to 2,650.86, 3,974.47 and 1,263.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.86 : 3,974.47 = 1,263.13 : x
2. Step 2: Convert to fraction form
   2,650.86/3,974.47 = 1,263.13/x
3. Step 3: Cross multiply
   2,650.86x = 3,974.47 × 1,263.13
4. Step 4: Simplify right side
   2,650.86x = 5,020,259.20
5. Step 5: Solve for x
   x = 5,020,259.20/2,650.86
6. Step 6: Final answer
   x = 1,893.82