Finding the Fourth Proportional to 2,624.71, 3,927.34 and 1,931.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.71 : 3,927.34 = 1,931.89 : x
2. Step 2: Convert to fraction form
   2,624.71/3,927.34 = 1,931.89/x
3. Step 3: Cross multiply
   2,624.71x = 3,927.34 × 1,931.89
4. Step 4: Simplify right side
   2,624.71x = 7,587,159.58
5. Step 5: Solve for x
   x = 7,587,159.58/2,624.71
6. Step 6: Final answer
   x = 2,890.67