Finding the Fourth Proportional to 2,012.47, 2,777.28 and 1,173.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.47 : 2,777.28 = 1,173.71 : x
2. Step 2: Convert to fraction form
   2,012.47/2,777.28 = 1,173.71/x
3. Step 3: Cross multiply
   2,012.47x = 2,777.28 × 1,173.71
4. Step 4: Simplify right side
   2,012.47x = 3,259,721.31
5. Step 5: Solve for x
   x = 3,259,721.31/2,012.47
6. Step 6: Final answer
   x = 1,619.76