Finding the Fourth Proportional to 1,431.02, 1,974.83 and 841.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.02 : 1,974.83 = 841.89 : x
2. Step 2: Convert to fraction form
   1,431.02/1,974.83 = 841.89/x
3. Step 3: Cross multiply
   1,431.02x = 1,974.83 × 841.89
4. Step 4: Simplify right side
   1,431.02x = 1,662,597.56
5. Step 5: Solve for x
   x = 1,662,597.56/1,431.02
6. Step 6: Final answer
   x = 1,161.83