Finding the Fourth Proportional to 3,685.07, 5,085.45 and 2,091.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,685.07 : 5,085.45 = 2,091.67 : x
2. Step 2: Convert to fraction form
   3,685.07/5,085.45 = 2,091.67/x
3. Step 3: Cross multiply
   3,685.07x = 5,085.45 × 2,091.67
4. Step 4: Simplify right side
   3,685.07x = 10,637,083.20
5. Step 5: Solve for x
   x = 10,637,083.20/3,685.07
6. Step 6: Final answer
   x = 2,886.54