Finding the Fourth Proportional to 1,345.86, 2,016.95 and 697.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.86 : 2,016.95 = 697.05 : x
2. Step 2: Convert to fraction form
   1,345.86/2,016.95 = 697.05/x
3. Step 3: Cross multiply
   1,345.86x = 2,016.95 × 697.05
4. Step 4: Simplify right side
   1,345.86x = 1,405,911.51
5. Step 5: Solve for x
   x = 1,405,911.51/1,345.86
6. Step 6: Final answer
   x = 1,044.62