Finding the Fourth Proportional to 2,656.72, 3,985.62 and 925.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.72 : 3,985.62 = 925.48 : x
2. Step 2: Convert to fraction form
   2,656.72/3,985.62 = 925.48/x
3. Step 3: Cross multiply
   2,656.72x = 3,985.62 × 925.48
4. Step 4: Simplify right side
   2,656.72x = 3,688,611.60
5. Step 5: Solve for x
   x = 3,688,611.60/2,656.72
6. Step 6: Final answer
   x = 1,388.41