Finding the Fourth Proportional to 1,445.02, 2,171.10 and 925.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.02 : 2,171.10 = 925.25 : x
2. Step 2: Convert to fraction form
   1,445.02/2,171.10 = 925.25/x
3. Step 3: Cross multiply
   1,445.02x = 2,171.10 × 925.25
4. Step 4: Simplify right side
   1,445.02x = 2,008,794.79
5. Step 5: Solve for x
   x = 2,008,794.79/1,445.02
6. Step 6: Final answer
   x = 1,390.15