Finding the Fourth Proportional to 1,430.75, 1,974.47 and 841.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.75 : 1,974.47 = 841.32 : x
2. Step 2: Convert to fraction form
   1,430.75/1,974.47 = 841.32/x
3. Step 3: Cross multiply
   1,430.75x = 1,974.47 × 841.32
4. Step 4: Simplify right side
   1,430.75x = 1,661,156.89
5. Step 5: Solve for x
   x = 1,661,156.89/1,430.75
6. Step 6: Final answer
   x = 1,161.04