Finding the Fourth Proportional to 2,573.72, 3,858.26 and 929.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.72 : 3,858.26 = 929.88 : x
2. Step 2: Convert to fraction form
   2,573.72/3,858.26 = 929.88/x
3. Step 3: Cross multiply
   2,573.72x = 3,858.26 × 929.88
4. Step 4: Simplify right side
   2,573.72x = 3,587,718.81
5. Step 5: Solve for x
   x = 3,587,718.81/2,573.72
6. Step 6: Final answer
   x = 1,393.98