Finding the Fourth Proportional to 3,874.48, 5,810.40 and 1,276.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,874.48 : 5,810.40 = 1,276.72 : x
2. Step 2: Convert to fraction form
   3,874.48/5,810.40 = 1,276.72/x
3. Step 3: Cross multiply
   3,874.48x = 5,810.40 × 1,276.72
4. Step 4: Simplify right side
   3,874.48x = 7,418,253.89
5. Step 5: Solve for x
   x = 7,418,253.89/3,874.48
6. Step 6: Final answer
   x = 1,914.65