Finding the Fourth Proportional to 1,284.08, 1,770.72 and 841.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284.08 : 1,770.72 = 841.52 : x
2. Step 2: Convert to fraction form
   1,284.08/1,770.72 = 841.52/x
3. Step 3: Cross multiply
   1,284.08x = 1,770.72 × 841.52
4. Step 4: Simplify right side
   1,284.08x = 1,490,096.29
5. Step 5: Solve for x
   x = 1,490,096.29/1,284.08
6. Step 6: Final answer
   x = 1,160.44