Finding the Fourth Proportional to 1,714.56, 2,572.16 and 561.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,714.56 : 2,572.16 = 561.12 : x
2. Step 2: Convert to fraction form
   1,714.56/2,572.16 = 561.12/x
3. Step 3: Cross multiply
   1,714.56x = 2,572.16 × 561.12
4. Step 4: Simplify right side
   1,714.56x = 1,443,290.42
5. Step 5: Solve for x
   x = 1,443,290.42/1,714.56
6. Step 6: Final answer
   x = 841.78