Finding the Fourth Proportional to 2,090.85, 2,885.27 and 1,206.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.85 : 2,885.27 = 1,206.93 : x
2. Step 2: Convert to fraction form
   2,090.85/2,885.27 = 1,206.93/x
3. Step 3: Cross multiply
   2,090.85x = 2,885.27 × 1,206.93
4. Step 4: Simplify right side
   2,090.85x = 3,482,312.89
5. Step 5: Solve for x
   x = 3,482,312.89/2,090.85
6. Step 6: Final answer
   x = 1,665.50