Finding the Fourth Proportional to 1,421.69, 1,962.29 and 925.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.69 : 1,962.29 = 925.56 : x
2. Step 2: Convert to fraction form
   1,421.69/1,962.29 = 925.56/x
3. Step 3: Cross multiply
   1,421.69x = 1,962.29 × 925.56
4. Step 4: Simplify right side
   1,421.69x = 1,816,219.45
5. Step 5: Solve for x
   x = 1,816,219.45/1,421.69
6. Step 6: Final answer
   x = 1,277.51