Finding the Fourth Proportional to 1,382.47, 2,071.51 and 826.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.47 : 2,071.51 = 826.09 : x
2. Step 2: Convert to fraction form
   1,382.47/2,071.51 = 826.09/x
3. Step 3: Cross multiply
   1,382.47x = 2,071.51 × 826.09
4. Step 4: Simplify right side
   1,382.47x = 1,711,246.45
5. Step 5: Solve for x
   x = 1,711,246.45/1,382.47
6. Step 6: Final answer
   x = 1,237.82