Finding the Fourth Proportional to 2,390.33, 3,300.01 and 1,551.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.33 : 3,300.01 = 1,551.78 : x
2. Step 2: Convert to fraction form
   2,390.33/3,300.01 = 1,551.78/x
3. Step 3: Cross multiply
   2,390.33x = 3,300.01 × 1,551.78
4. Step 4: Simplify right side
   2,390.33x = 5,120,885.64
5. Step 5: Solve for x
   x = 5,120,885.64/2,390.33
6. Step 6: Final answer
   x = 2,142.33