Finding the Fourth Proportional to 2,522.61, 3,784.32 and 1,428.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.61 : 3,784.32 = 1,428.30 : x
2. Step 2: Convert to fraction form
   2,522.61/3,784.32 = 1,428.30/x
3. Step 3: Cross multiply
   2,522.61x = 3,784.32 × 1,428.30
4. Step 4: Simplify right side
   2,522.61x = 5,405,144.26
5. Step 5: Solve for x
   x = 5,405,144.26/2,522.61
6. Step 6: Final answer
   x = 2,142.68