Finding the Fourth Proportional to 2,164.84, 3,247.35 and 931.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.84 : 3,247.35 = 931.41 : x
2. Step 2: Convert to fraction form
   2,164.84/3,247.35 = 931.41/x
3. Step 3: Cross multiply
   2,164.84x = 3,247.35 × 931.41
4. Step 4: Simplify right side
   2,164.84x = 3,024,598.03
5. Step 5: Solve for x
   x = 3,024,598.03/2,164.84
6. Step 6: Final answer
   x = 1,397.15