Finding the Fourth Proportional to 2,528.18, 3,488.89 and 1,409.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.18 : 3,488.89 = 1,409.12 : x
2. Step 2: Convert to fraction form
   2,528.18/3,488.89 = 1,409.12/x
3. Step 3: Cross multiply
   2,528.18x = 3,488.89 × 1,409.12
4. Step 4: Simplify right side
   2,528.18x = 4,916,243.71
5. Step 5: Solve for x
   x = 4,916,243.71/2,528.18
6. Step 6: Final answer
   x = 1,944.58