Finding the Fourth Proportional to 1,709.91, 2,562.79 and 784.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,709.91 : 2,562.79 = 784.18 : x
2. Step 2: Convert to fraction form
   1,709.91/2,562.79 = 784.18/x
3. Step 3: Cross multiply
   1,709.91x = 2,562.79 × 784.18
4. Step 4: Simplify right side
   1,709.91x = 2,009,691.38
5. Step 5: Solve for x
   x = 2,009,691.38/1,709.91
6. Step 6: Final answer
   x = 1,175.32