Finding the Fourth Proportional to 909,778.72, 1,361,828.20 and 670,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   909,778.72 : 1,361,828.20 = 670,162.72 : x
2. Step 2: Convert to fraction form
   909,778.72/1,361,828.20 = 670,162.72/x
3. Step 3: Cross multiply
   909,778.72x = 1,361,828.20 × 670,162.72
4. Step 4: Simplify right side
   909,778.72x = 912,646,490,684.70
5. Step 5: Solve for x
   x = 912,646,490,684.70/909,778.72
6. Step 6: Final answer
   x = 1,003,152.16