Finding the Fourth Proportional to 2,991.47, 4,486.59 and 1,142.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,991.47 : 4,486.59 = 1,142.10 : x
2. Step 2: Convert to fraction form
   2,991.47/4,486.59 = 1,142.10/x
3. Step 3: Cross multiply
   2,991.47x = 4,486.59 × 1,142.10
4. Step 4: Simplify right side
   2,991.47x = 5,124,134.44
5. Step 5: Solve for x
   x = 5,124,134.44/2,991.47
6. Step 6: Final answer
   x = 1,712.92