Finding the Fourth Proportional to 1,999.29, 2,760.27 and 1,291.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,999.29 : 2,760.27 = 1,291.50 : x
2. Step 2: Convert to fraction form
   1,999.29/2,760.27 = 1,291.50/x
3. Step 3: Cross multiply
   1,999.29x = 2,760.27 × 1,291.50
4. Step 4: Simplify right side
   1,999.29x = 3,564,888.71
5. Step 5: Solve for x
   x = 3,564,888.71/1,999.29
6. Step 6: Final answer
   x = 1,783.08