Finding the Fourth Proportional to 1,711.56, 2,566.40 and 981.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,711.56 : 2,566.40 = 981.69 : x
2. Step 2: Convert to fraction form
   1,711.56/2,566.40 = 981.69/x
3. Step 3: Cross multiply
   1,711.56x = 2,566.40 × 981.69
4. Step 4: Simplify right side
   1,711.56x = 2,519,404.31
5. Step 5: Solve for x
   x = 2,519,404.31/1,711.56
6. Step 6: Final answer
   x = 1,471.99