Finding the Fourth Proportional to 2,624.61, 3,936.88 and 981.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.61 : 3,936.88 = 981.93 : x
2. Step 2: Convert to fraction form
   2,624.61/3,936.88 = 981.93/x
3. Step 3: Cross multiply
   2,624.61x = 3,936.88 × 981.93
4. Step 4: Simplify right side
   2,624.61x = 3,865,740.58
5. Step 5: Solve for x
   x = 3,865,740.58/2,624.61
6. Step 6: Final answer
   x = 1,472.88