Finding the Fourth Proportional to 1,911.69, 2,636.67 and 1,282.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,911.69 : 2,636.67 = 1,282.02 : x
2. Step 2: Convert to fraction form
   1,911.69/2,636.67 = 1,282.02/x
3. Step 3: Cross multiply
   1,911.69x = 2,636.67 × 1,282.02
4. Step 4: Simplify right side
   1,911.69x = 3,380,263.67
5. Step 5: Solve for x
   x = 3,380,263.67/1,911.69
6. Step 6: Final answer
   x = 1,768.21