Finding the Fourth Proportional to 1,061.42, 1,592.11 and 436.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.42 : 1,592.11 = 436.59 : x
2. Step 2: Convert to fraction form
   1,061.42/1,592.11 = 436.59/x
3. Step 3: Cross multiply
   1,061.42x = 1,592.11 × 436.59
4. Step 4: Simplify right side
   1,061.42x = 695,099.30
5. Step 5: Solve for x
   x = 695,099.30/1,061.42
6. Step 6: Final answer
   x = 654.88