Finding the Fourth Proportional to 2,070.95, 3,103.89 and 837.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.95 : 3,103.89 = 837.72 : x
2. Step 2: Convert to fraction form
   2,070.95/3,103.89 = 837.72/x
3. Step 3: Cross multiply
   2,070.95x = 3,103.89 × 837.72
4. Step 4: Simplify right side
   2,070.95x = 2,600,190.73
5. Step 5: Solve for x
   x = 2,600,190.73/2,070.95
6. Step 6: Final answer
   x = 1,255.56