Finding the Fourth Proportional to 2,070.46, 3,106.17 and 916.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.46 : 3,106.17 = 916.54 : x
2. Step 2: Convert to fraction form
   2,070.46/3,106.17 = 916.54/x
3. Step 3: Cross multiply
   2,070.46x = 3,106.17 × 916.54
4. Step 4: Simplify right side
   2,070.46x = 2,846,929.05
5. Step 5: Solve for x
   x = 2,846,929.05/2,070.46
6. Step 6: Final answer
   x = 1,375.02