Finding the Fourth Proportional to 1,030.56, 1,422.12 and 564.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.56 : 1,422.12 = 564.72 : x
2. Step 2: Convert to fraction form
   1,030.56/1,422.12 = 564.72/x
3. Step 3: Cross multiply
   1,030.56x = 1,422.12 × 564.72
4. Step 4: Simplify right side
   1,030.56x = 803,099.61
5. Step 5: Solve for x
   x = 803,099.61/1,030.56
6. Step 6: Final answer
   x = 779.28