Finding the Fourth Proportional to 1,685.69, 2,511.78 and 1,501.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.69 : 2,511.78 = 1,501.67 : x
2. Step 2: Convert to fraction form
   1,685.69/2,511.78 = 1,501.67/x
3. Step 3: Cross multiply
   1,685.69x = 2,511.78 × 1,501.67
4. Step 4: Simplify right side
   1,685.69x = 3,771,864.67
5. Step 5: Solve for x
   x = 3,771,864.67/1,685.69
6. Step 6: Final answer
   x = 2,237.58