Finding the Fourth Proportional to 2,090.86, 2,885.79 and 1,382.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.86 : 2,885.79 = 1,382.74 : x
2. Step 2: Convert to fraction form
   2,090.86/2,885.79 = 1,382.74/x
3. Step 3: Cross multiply
   2,090.86x = 2,885.79 × 1,382.74
4. Step 4: Simplify right side
   2,090.86x = 3,990,311.47
5. Step 5: Solve for x
   x = 3,990,311.47/2,090.86
6. Step 6: Final answer
   x = 1,908.45