Finding the Fourth Proportional to 1,430.88, 1,974.81 and 841.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.88 : 1,974.81 = 841.62 : x
2. Step 2: Convert to fraction form
   1,430.88/1,974.81 = 841.62/x
3. Step 3: Cross multiply
   1,430.88x = 1,974.81 × 841.62
4. Step 4: Simplify right side
   1,430.88x = 1,662,039.59
5. Step 5: Solve for x
   x = 1,662,039.59/1,430.88
6. Step 6: Final answer
   x = 1,161.55