Finding the Fourth Proportional to 2,109.09, 3,160.22 and 1,284.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.09 : 3,160.22 = 1,284.86 : x
2. Step 2: Convert to fraction form
   2,109.09/3,160.22 = 1,284.86/x
3. Step 3: Cross multiply
   2,109.09x = 3,160.22 × 1,284.86
4. Step 4: Simplify right side
   2,109.09x = 4,060,441.75
5. Step 5: Solve for x
   x = 4,060,441.75/2,109.09
6. Step 6: Final answer
   x = 1,925.21