Finding the Fourth Proportional to 1,335.61, 1,843.23 and 776.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.61 : 1,843.23 = 776.04 : x
2. Step 2: Convert to fraction form
   1,335.61/1,843.23 = 776.04/x
3. Step 3: Cross multiply
   1,335.61x = 1,843.23 × 776.04
4. Step 4: Simplify right side
   1,335.61x = 1,430,426.98
5. Step 5: Solve for x
   x = 1,430,426.98/1,335.61
6. Step 6: Final answer
   x = 1,070.99