Finding the Fourth Proportional to 1,335.84, 1,844.56 and 838.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.84 : 1,844.56 = 838.72 : x
2. Step 2: Convert to fraction form
   1,335.84/1,844.56 = 838.72/x
3. Step 3: Cross multiply
   1,335.84x = 1,844.56 × 838.72
4. Step 4: Simplify right side
   1,335.84x = 1,547,069.36
5. Step 5: Solve for x
   x = 1,547,069.36/1,335.84
6. Step 6: Final answer
   x = 1,158.12