Finding the Fourth Proportional to 1,061.84, 1,465.28 and 607.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.84 : 1,465.28 = 607.60 : x
2. Step 2: Convert to fraction form
   1,061.84/1,465.28 = 607.60/x
3. Step 3: Cross multiply
   1,061.84x = 1,465.28 × 607.60
4. Step 4: Simplify right side
   1,061.84x = 890,304.13
5. Step 5: Solve for x
   x = 890,304.13/1,061.84
6. Step 6: Final answer
   x = 838.45