Finding the Fourth Proportional to 1,430.73, 1,974.71 and 841.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.73 : 1,974.71 = 841.39 : x
2. Step 2: Convert to fraction form
   1,430.73/1,974.71 = 841.39/x
3. Step 3: Cross multiply
   1,430.73x = 1,974.71 × 841.39
4. Step 4: Simplify right side
   1,430.73x = 1,661,498.41
5. Step 5: Solve for x
   x = 1,661,498.41/1,430.73
6. Step 6: Final answer
   x = 1,161.29