Finding the Fourth Proportional to 1,335.45, 1,843.00 and 776.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.45 : 1,843.00 = 776.10 : x
2. Step 2: Convert to fraction form
   1,335.45/1,843.00 = 776.10/x
3. Step 3: Cross multiply
   1,335.45x = 1,843.00 × 776.10
4. Step 4: Simplify right side
   1,335.45x = 1,430,351.27
5. Step 5: Solve for x
   x = 1,430,351.27/1,335.45
6. Step 6: Final answer
   x = 1,071.06