Finding the Fourth Proportional to 2,090.28, 2,885.58 and 1,305.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.28 : 2,885.58 = 1,305.48 : x
2. Step 2: Convert to fraction form
   2,090.28/2,885.58 = 1,305.48/x
3. Step 3: Cross multiply
   2,090.28x = 2,885.58 × 1,305.48
4. Step 4: Simplify right side
   2,090.28x = 3,767,066.98
5. Step 5: Solve for x
   x = 3,767,066.98/2,090.28
6. Step 6: Final answer
   x = 1,802.18