Finding the Fourth Proportional to 2,271.86, 3,135.22 and 1,277.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.86 : 3,135.22 = 1,277.21 : x
2. Step 2: Convert to fraction form
   2,271.86/3,135.22 = 1,277.21/x
3. Step 3: Cross multiply
   2,271.86x = 3,135.22 × 1,277.21
4. Step 4: Simplify right side
   2,271.86x = 4,004,334.34
5. Step 5: Solve for x
   x = 4,004,334.34/2,271.86
6. Step 6: Final answer
   x = 1,762.58