Finding the Fourth Proportional to 1,276.71, 1,914.27 and 837.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.71 : 1,914.27 = 837.42 : x
2. Step 2: Convert to fraction form
   1,276.71/1,914.27 = 837.42/x
3. Step 3: Cross multiply
   1,276.71x = 1,914.27 × 837.42
4. Step 4: Simplify right side
   1,276.71x = 1,603,047.98
5. Step 5: Solve for x
   x = 1,603,047.98/1,276.71
6. Step 6: Final answer
   x = 1,255.61