Finding the Fourth Proportional to 2,070.76, 3,106.72 and 837.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.76 : 3,106.72 = 837.88 : x
2. Step 2: Convert to fraction form
   2,070.76/3,106.72 = 837.88/x
3. Step 3: Cross multiply
   2,070.76x = 3,106.72 × 837.88
4. Step 4: Simplify right side
   2,070.76x = 2,603,058.55
5. Step 5: Solve for x
   x = 2,603,058.55/2,070.76
6. Step 6: Final answer
   x = 1,257.05