Finding the Fourth Proportional to 1,334.64, 1,841.61 and 810.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.64 : 1,841.61 = 810.57 : x
2. Step 2: Convert to fraction form
   1,334.64/1,841.61 = 810.57/x
3. Step 3: Cross multiply
   1,334.64x = 1,841.61 × 810.57
4. Step 4: Simplify right side
   1,334.64x = 1,492,753.82
5. Step 5: Solve for x
   x = 1,492,753.82/1,334.64
6. Step 6: Final answer
   x = 1,118.47