Finding the Fourth Proportional to 2,090.67, 2,885.01 and 1,206.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.67 : 2,885.01 = 1,206.42 : x
2. Step 2: Convert to fraction form
   2,090.67/2,885.01 = 1,206.42/x
3. Step 3: Cross multiply
   2,090.67x = 2,885.01 × 1,206.42
4. Step 4: Simplify right side
   2,090.67x = 3,480,533.76
5. Step 5: Solve for x
   x = 3,480,533.76/2,090.67
6. Step 6: Final answer
   x = 1,664.79