Finding the Fourth Proportional to 2,624.81, 3,937.63 and 981.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.81 : 3,937.63 = 981.59 : x
2. Step 2: Convert to fraction form
   2,624.81/3,937.63 = 981.59/x
3. Step 3: Cross multiply
   2,624.81x = 3,937.63 × 981.59
4. Step 4: Simplify right side
   2,624.81x = 3,865,145.62
5. Step 5: Solve for x
   x = 3,865,145.62/2,624.81
6. Step 6: Final answer
   x = 1,472.54