Finding the Fourth Proportional to 1,559.71, 2,338.01 and 866.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.71 : 2,338.01 = 866.69 : x
2. Step 2: Convert to fraction form
   1,559.71/2,338.01 = 866.69/x
3. Step 3: Cross multiply
   1,559.71x = 2,338.01 × 866.69
4. Step 4: Simplify right side
   1,559.71x = 2,026,330.76
5. Step 5: Solve for x
   x = 2,026,330.76/1,559.71
6. Step 6: Final answer
   x = 1,299.17