Finding the Fourth Proportional to 1,038.96, 1,433.76 and 573.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038.96 : 1,433.76 = 573.18 : x
2. Step 2: Convert to fraction form
   1,038.96/1,433.76 = 573.18/x
3. Step 3: Cross multiply
   1,038.96x = 1,433.76 × 573.18
4. Step 4: Simplify right side
   1,038.96x = 821,802.56
5. Step 5: Solve for x
   x = 821,802.56/1,038.96
6. Step 6: Final answer
   x = 790.99