Finding the Fourth Proportional to 2,388.38, 3,582.45 and 1,420.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.38 : 3,582.45 = 1,420.62 : x
2. Step 2: Convert to fraction form
   2,388.38/3,582.45 = 1,420.62/x
3. Step 3: Cross multiply
   2,388.38x = 3,582.45 × 1,420.62
4. Step 4: Simplify right side
   2,388.38x = 5,089,300.12
5. Step 5: Solve for x
   x = 5,089,300.12/2,388.38
6. Step 6: Final answer
   x = 2,130.86