Finding the Fourth Proportional to 1,362.33, 1,880.12 and 772.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.33 : 1,880.12 = 772.98 : x
2. Step 2: Convert to fraction form
   1,362.33/1,880.12 = 772.98/x
3. Step 3: Cross multiply
   1,362.33x = 1,880.12 × 772.98
4. Step 4: Simplify right side
   1,362.33x = 1,453,291.29
5. Step 5: Solve for x
   x = 1,453,291.29/1,362.33
6. Step 6: Final answer
   x = 1,066.77