Finding the Fourth Proportional to 1,363.52, 1,881.96 and 839.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.52 : 1,881.96 = 839.72 : x
2. Step 2: Convert to fraction form
   1,363.52/1,881.96 = 839.72/x
3. Step 3: Cross multiply
   1,363.52x = 1,881.96 × 839.72
4. Step 4: Simplify right side
   1,363.52x = 1,580,319.45
5. Step 5: Solve for x
   x = 1,580,319.45/1,363.52
6. Step 6: Final answer
   x = 1,159.00