Finding the Fourth Proportional to 2,990.02, 4,126.36 and 2,491.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,990.02 : 4,126.36 = 2,491.82 : x
2. Step 2: Convert to fraction form
   2,990.02/4,126.36 = 2,491.82/x
3. Step 3: Cross multiply
   2,990.02x = 4,126.36 × 2,491.82
4. Step 4: Simplify right side
   2,990.02x = 10,282,146.38
5. Step 5: Solve for x
   x = 10,282,146.38/2,990.02
6. Step 6: Final answer
   x = 3,438.82