Finding the Fourth Proportional to 2,128.06, 3,192.63 and 974.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.06 : 3,192.63 = 974.62 : x
2. Step 2: Convert to fraction form
   2,128.06/3,192.63 = 974.62/x
3. Step 3: Cross multiply
   2,128.06x = 3,192.63 × 974.62
4. Step 4: Simplify right side
   2,128.06x = 3,111,601.05
5. Step 5: Solve for x
   x = 3,111,601.05/2,128.06
6. Step 6: Final answer
   x = 1,462.18