Finding the Fourth Proportional to 1,756.71, 2,636.37 and 1,200.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,756.71 : 2,636.37 = 1,200.12 : x
2. Step 2: Convert to fraction form
   1,756.71/2,636.37 = 1,200.12/x
3. Step 3: Cross multiply
   1,756.71x = 2,636.37 × 1,200.12
4. Step 4: Simplify right side
   1,756.71x = 3,163,960.36
5. Step 5: Solve for x
   x = 3,163,960.36/1,756.71
6. Step 6: Final answer
   x = 1,801.07