Finding the Fourth Proportional to 1,875.25, 2,812.83 and 779.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.25 : 2,812.83 = 779.32 : x
2. Step 2: Convert to fraction form
   1,875.25/2,812.83 = 779.32/x
3. Step 3: Cross multiply
   1,875.25x = 2,812.83 × 779.32
4. Step 4: Simplify right side
   1,875.25x = 2,192,095.27
5. Step 5: Solve for x
   x = 2,192,095.27/1,875.25
6. Step 6: Final answer
   x = 1,168.96