Finding the Fourth Proportional to 2,581.89, 3,873.65 and 938.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.89 : 3,873.65 = 938.00 : x
2. Step 2: Convert to fraction form
   2,581.89/3,873.65 = 938.00/x
3. Step 3: Cross multiply
   2,581.89x = 3,873.65 × 938.00
4. Step 4: Simplify right side
   2,581.89x = 3,633,459.64
5. Step 5: Solve for x
   x = 3,633,459.64/2,581.89
6. Step 6: Final answer
   x = 1,407.29