Finding the Fourth Proportional to 1,228,659.52, 1,695,648.72 and 684,971.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228,659.52 : 1,695,648.72 = 684,971.32 : x
2. Step 2: Convert to fraction form
   1,228,659.52/1,695,648.72 = 684,971.32/x
3. Step 3: Cross multiply
   1,228,659.52x = 1,695,648.72 × 684,971.32
4. Step 4: Simplify right side
   1,228,659.52x = 1,161,470,741,994.71
5. Step 5: Solve for x
   x = 1,161,470,741,994.71/1,228,659.52
6. Step 6: Final answer
   x = 945,315.38