Finding the Fourth Proportional to 1,606.83, 2,406.80 and 874.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.83 : 2,406.80 = 874.86 : x
2. Step 2: Convert to fraction form
   1,606.83/2,406.80 = 874.86/x
3. Step 3: Cross multiply
   1,606.83x = 2,406.80 × 874.86
4. Step 4: Simplify right side
   1,606.83x = 2,105,608.67
5. Step 5: Solve for x
   x = 2,105,608.67/1,606.83
6. Step 6: Final answer
   x = 1,310.41