Finding the Fourth Proportional to 1,710.98, 2,571.03 and 931.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,710.98 : 2,571.03 = 931.56 : x
2. Step 2: Convert to fraction form
   1,710.98/2,571.03 = 931.56/x
3. Step 3: Cross multiply
   1,710.98x = 2,571.03 × 931.56
4. Step 4: Simplify right side
   1,710.98x = 2,395,068.71
5. Step 5: Solve for x
   x = 2,395,068.71/1,710.98
6. Step 6: Final answer
   x = 1,399.82