Finding the Fourth Proportional to 1,034.91, 1,428.15 and 562.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034.91 : 1,428.15 = 562.79 : x
2. Step 2: Convert to fraction form
   1,034.91/1,428.15 = 562.79/x
3. Step 3: Cross multiply
   1,034.91x = 1,428.15 × 562.79
4. Step 4: Simplify right side
   1,034.91x = 803,741.40
5. Step 5: Solve for x
   x = 803,741.40/1,034.91
6. Step 6: Final answer
   x = 776.63