Finding the Fourth Proportional to 1,606.47, 2,408.86 and 875.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.47 : 2,408.86 = 875.85 : x
2. Step 2: Convert to fraction form
   1,606.47/2,408.86 = 875.85/x
3. Step 3: Cross multiply
   1,606.47x = 2,408.86 × 875.85
4. Step 4: Simplify right side
   1,606.47x = 2,109,800.03
5. Step 5: Solve for x
   x = 2,109,800.03/1,606.47
6. Step 6: Final answer
   x = 1,313.31