Finding the Fourth Proportional to 2,384.40, 3,579.12 and 1,345.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,384.40 : 3,579.12 = 1,345.32 : x
2. Step 2: Convert to fraction form
   2,384.40/3,579.12 = 1,345.32/x
3. Step 3: Cross multiply
   2,384.40x = 3,579.12 × 1,345.32
4. Step 4: Simplify right side
   2,384.40x = 4,815,061.72
5. Step 5: Solve for x
   x = 4,815,061.72/2,384.40
6. Step 6: Final answer
   x = 2,019.40