Finding the Fourth Proportional to 2,990.51, 4,484.72 and 1,142.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,990.51 : 4,484.72 = 1,142.14 : x
2. Step 2: Convert to fraction form
   2,990.51/4,484.72 = 1,142.14/x
3. Step 3: Cross multiply
   2,990.51x = 4,484.72 × 1,142.14
4. Step 4: Simplify right side
   2,990.51x = 5,122,178.10
5. Step 5: Solve for x
   x = 5,122,178.10/2,990.51
6. Step 6: Final answer
   x = 1,712.81