Finding the Fourth Proportional to 1,066.32, 1,602.76 and 779.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.32 : 1,602.76 = 779.04 : x
2. Step 2: Convert to fraction form
   1,066.32/1,602.76 = 779.04/x
3. Step 3: Cross multiply
   1,066.32x = 1,602.76 × 779.04
4. Step 4: Simplify right side
   1,066.32x = 1,248,614.15
5. Step 5: Solve for x
   x = 1,248,614.15/1,066.32
6. Step 6: Final answer
   x = 1,170.96