Finding the Fourth Proportional to 2,100.94, 3,151.91 and 946.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.94 : 3,151.91 = 946.69 : x
2. Step 2: Convert to fraction form
   2,100.94/3,151.91 = 946.69/x
3. Step 3: Cross multiply
   2,100.94x = 3,151.91 × 946.69
4. Step 4: Simplify right side
   2,100.94x = 2,983,876.16
5. Step 5: Solve for x
   x = 2,983,876.16/2,100.94
6. Step 6: Final answer
   x = 1,420.26