Finding the Fourth Proportional to 1,404.58, 2,107.71 and 539.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.58 : 2,107.71 = 539.62 : x
2. Step 2: Convert to fraction form
   1,404.58/2,107.71 = 539.62/x
3. Step 3: Cross multiply
   1,404.58x = 2,107.71 × 539.62
4. Step 4: Simplify right side
   1,404.58x = 1,137,362.47
5. Step 5: Solve for x
   x = 1,137,362.47/1,404.58
6. Step 6: Final answer
   x = 809.75