Finding the Fourth Proportional to 2,100.93, 3,147.92 and 1,276.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.93 : 3,147.92 = 1,276.70 : x
2. Step 2: Convert to fraction form
   2,100.93/3,147.92 = 1,276.70/x
3. Step 3: Cross multiply
   2,100.93x = 3,147.92 × 1,276.70
4. Step 4: Simplify right side
   2,100.93x = 4,018,949.46
5. Step 5: Solve for x
   x = 4,018,949.46/2,100.93
6. Step 6: Final answer
   x = 1,912.94