Finding the Fourth Proportional to 1,426.74, 1,968.84 and 837.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.74 : 1,968.84 = 837.15 : x
2. Step 2: Convert to fraction form
   1,426.74/1,968.84 = 837.15/x
3. Step 3: Cross multiply
   1,426.74x = 1,968.84 × 837.15
4. Step 4: Simplify right side
   1,426.74x = 1,648,214.41
5. Step 5: Solve for x
   x = 1,648,214.41/1,426.74
6. Step 6: Final answer
   x = 1,155.23