Finding the Fourth Proportional to 3,620.39, 5,426.88 and 1,426.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,620.39 : 5,426.88 = 1,426.10 : x
2. Step 2: Convert to fraction form
   3,620.39/5,426.88 = 1,426.10/x
3. Step 3: Cross multiply
   3,620.39x = 5,426.88 × 1,426.10
4. Step 4: Simplify right side
   3,620.39x = 7,739,246.43
5. Step 5: Solve for x
   x = 7,739,246.43/3,620.39
6. Step 6: Final answer
   x = 2,137.69