Finding the Fourth Proportional to 906,730.89, 1,360,047.12 and 275,595.50

Step by Step Solution

1. Step 1: Write the proportion equation
   906,730.89 : 1,360,047.12 = 275,595.50 : x
2. Step 2: Convert to fraction form
   906,730.89/1,360,047.12 = 275,595.50/x
3. Step 3: Cross multiply
   906,730.89x = 1,360,047.12 × 275,595.50
4. Step 4: Simplify right side
   906,730.89x = 374,822,859,259.72
5. Step 5: Solve for x
   x = 374,822,859,259.72/906,730.89
6. Step 6: Final answer
   x = 413,378.28