Finding the Fourth Proportional to 1,223,530.32, 1,688,484.72 and 679,699.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223,530.32 : 1,688,484.72 = 679,699.92 : x
2. Step 2: Convert to fraction form
   1,223,530.32/1,688,484.72 = 679,699.92/x
3. Step 3: Cross multiply
   1,223,530.32x = 1,688,484.72 × 679,699.92
4. Step 4: Simplify right side
   1,223,530.32x = 1,147,662,929,105.22
5. Step 5: Solve for x
   x = 1,147,662,929,105.22/1,223,530.32
6. Step 6: Final answer
   x = 937,993.04