Finding the Fourth Proportional to 2,090.34, 2,885.04 and 1,392.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.34 : 2,885.04 = 1,392.84 : x
2. Step 2: Convert to fraction form
   2,090.34/2,885.04 = 1,392.84/x
3. Step 3: Cross multiply
   2,090.34x = 2,885.04 × 1,392.84
4. Step 4: Simplify right side
   2,090.34x = 4,018,399.11
5. Step 5: Solve for x
   x = 4,018,399.11/2,090.34
6. Step 6: Final answer
   x = 1,922.37