Finding the Fourth Proportional to 1,362.50, 1,880.22 and 773.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.50 : 1,880.22 = 773.10 : x
2. Step 2: Convert to fraction form
   1,362.50/1,880.22 = 773.10/x
3. Step 3: Cross multiply
   1,362.50x = 1,880.22 × 773.10
4. Step 4: Simplify right side
   1,362.50x = 1,453,598.08
5. Step 5: Solve for x
   x = 1,453,598.08/1,362.50
6. Step 6: Final answer
   x = 1,066.86