Finding the Fourth Proportional to 2,021.98, 3,030.05 and 1,142.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.98 : 3,030.05 = 1,142.63 : x
2. Step 2: Convert to fraction form
   2,021.98/3,030.05 = 1,142.63/x
3. Step 3: Cross multiply
   2,021.98x = 3,030.05 × 1,142.63
4. Step 4: Simplify right side
   2,021.98x = 3,462,205.17
5. Step 5: Solve for x
   x = 3,462,205.17/2,021.98
6. Step 6: Final answer
   x = 1,712.29