Finding the Fourth Proportional to 1,008.06, 1,513.89 and 847.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.06 : 1,513.89 = 847.86 : x
2. Step 2: Convert to fraction form
   1,008.06/1,513.89 = 847.86/x
3. Step 3: Cross multiply
   1,008.06x = 1,513.89 × 847.86
4. Step 4: Simplify right side
   1,008.06x = 1,283,566.78
5. Step 5: Solve for x
   x = 1,283,566.78/1,008.06
6. Step 6: Final answer
   x = 1,273.30