Finding the Fourth Proportional to 1,068.21, 1,468.58 and 1,061.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.21 : 1,468.58 = 1,061.55 : x
2. Step 2: Convert to fraction form
   1,068.21/1,468.58 = 1,061.55/x
3. Step 3: Cross multiply
   1,068.21x = 1,468.58 × 1,061.55
4. Step 4: Simplify right side
   1,068.21x = 1,558,969.05
5. Step 5: Solve for x
   x = 1,558,969.05/1,068.21
6. Step 6: Final answer
   x = 1,459.42