Finding the Fourth Proportional to 1,356.03, 1,870.92 and 766.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.03 : 1,870.92 = 766.53 : x
2. Step 2: Convert to fraction form
   1,356.03/1,870.92 = 766.53/x
3. Step 3: Cross multiply
   1,356.03x = 1,870.92 × 766.53
4. Step 4: Simplify right side
   1,356.03x = 1,434,116.31
5. Step 5: Solve for x
   x = 1,434,116.31/1,356.03
6. Step 6: Final answer
   x = 1,057.58