Finding the Fourth Proportional to 1,404.69, 1,938.20 and 873.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.69 : 1,938.20 = 873.72 : x
2. Step 2: Convert to fraction form
   1,404.69/1,938.20 = 873.72/x
3. Step 3: Cross multiply
   1,404.69x = 1,938.20 × 873.72
4. Step 4: Simplify right side
   1,404.69x = 1,693,446.29
5. Step 5: Solve for x
   x = 1,693,446.29/1,404.69
6. Step 6: Final answer
   x = 1,205.57