Finding the Fourth Proportional to 7,085.67, 10,628.64 and 1,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,085.67 : 10,628.64 = 1,891.50 : x
2. Step 2: Convert to fraction form
   7,085.67/10,628.64 = 1,891.50/x
3. Step 3: Cross multiply
   7,085.67x = 10,628.64 × 1,891.50
4. Step 4: Simplify right side
   7,085.67x = 20,104,072.56
5. Step 5: Solve for x
   x = 20,104,072.56/7,085.67
6. Step 6: Final answer
   x = 2,837.29