Finding the Fourth Proportional to 2,100.77, 3,152.84 and 946.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.77 : 3,152.84 = 946.61 : x
2. Step 2: Convert to fraction form
   2,100.77/3,152.84 = 946.61/x
3. Step 3: Cross multiply
   2,100.77x = 3,152.84 × 946.61
4. Step 4: Simplify right side
   2,100.77x = 2,984,505.14
5. Step 5: Solve for x
   x = 2,984,505.14/2,100.77
6. Step 6: Final answer
   x = 1,420.67