Finding the Fourth Proportional to 885,513.21, 1,328,137.38 and 245,749.50

Step by Step Solution

1. Step 1: Write the proportion equation
   885,513.21 : 1,328,137.38 = 245,749.50 : x
2. Step 2: Convert to fraction form
   885,513.21/1,328,137.38 = 245,749.50/x
3. Step 3: Cross multiply
   885,513.21x = 1,328,137.38 × 245,749.50
4. Step 4: Simplify right side
   885,513.21x = 326,389,097,066.31
5. Step 5: Solve for x
   x = 326,389,097,066.31/885,513.21
6. Step 6: Final answer
   x = 368,587.50