Finding the Fourth Proportional to 2,752.61, 4,128.77 and 973.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,752.61 : 4,128.77 = 973.55 : x
2. Step 2: Convert to fraction form
   2,752.61/4,128.77 = 973.55/x
3. Step 3: Cross multiply
   2,752.61x = 4,128.77 × 973.55
4. Step 4: Simplify right side
   2,752.61x = 4,019,556.60
5. Step 5: Solve for x
   x = 4,019,556.60/2,752.61
6. Step 6: Final answer
   x = 1,460.27