Finding the Fourth Proportional to 2,128.74, 3,192.03 and 973.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.74 : 3,192.03 = 973.50 : x
2. Step 2: Convert to fraction form
   2,128.74/3,192.03 = 973.50/x
3. Step 3: Cross multiply
   2,128.74x = 3,192.03 × 973.50
4. Step 4: Simplify right side
   2,128.74x = 3,107,441.21
5. Step 5: Solve for x
   x = 3,107,441.21/2,128.74
6. Step 6: Final answer
   x = 1,459.76