Finding the Fourth Proportional to 1,875.35, 2,814.27 and 779.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.35 : 2,814.27 = 779.72 : x
2. Step 2: Convert to fraction form
   1,875.35/2,814.27 = 779.72/x
3. Step 3: Cross multiply
   1,875.35x = 2,814.27 × 779.72
4. Step 4: Simplify right side
   1,875.35x = 2,194,330.00
5. Step 5: Solve for x
   x = 2,194,330.00/1,875.35
6. Step 6: Final answer
   x = 1,170.09