Finding the Fourth Proportional to 906,188, 1,250,540.88 and 503,780

Step by Step Solution

1. Step 1: Write the proportion equation
   906,188 : 1,250,540.88 = 503,780 : x
2. Step 2: Convert to fraction form
   906,188/1,250,540.88 = 503,780/x
3. Step 3: Cross multiply
   906,188x = 1,250,540.88 × 503,780
4. Step 4: Simplify right side
   906,188x = 629,997,484,526.40
5. Step 5: Solve for x
   x = 629,997,484,526.40/906,188
6. Step 6: Final answer
   x = 695,217.20