Finding the Fourth Proportional to 2,925.69, 4,387.61 and 845.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,925.69 : 4,387.61 = 845.13 : x
2. Step 2: Convert to fraction form
   2,925.69/4,387.61 = 845.13/x
3. Step 3: Cross multiply
   2,925.69x = 4,387.61 × 845.13
4. Step 4: Simplify right side
   2,925.69x = 3,708,096.61
5. Step 5: Solve for x
   x = 3,708,096.61/2,925.69
6. Step 6: Final answer
   x = 1,267.43