Finding the Fourth Proportional to 1,066.48, 1,592.42 and 847.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.48 : 1,592.42 = 847.60 : x
2. Step 2: Convert to fraction form
   1,066.48/1,592.42 = 847.60/x
3. Step 3: Cross multiply
   1,066.48x = 1,592.42 × 847.60
4. Step 4: Simplify right side
   1,066.48x = 1,349,735.19
5. Step 5: Solve for x
   x = 1,349,735.19/1,066.48
6. Step 6: Final answer
   x = 1,265.60