Finding the Fourth Proportional to 1,507.28, 2,079.88 and 843.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.28 : 2,079.88 = 843.98 : x
2. Step 2: Convert to fraction form
   1,507.28/2,079.88 = 843.98/x
3. Step 3: Cross multiply
   1,507.28x = 2,079.88 × 843.98
4. Step 4: Simplify right side
   1,507.28x = 1,755,364.61
5. Step 5: Solve for x
   x = 1,755,364.61/1,507.28
6. Step 6: Final answer
   x = 1,164.59