Finding the Fourth Proportional to 1,121,123.78, 1,547,150.41 and 611,826.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,121,123.78 : 1,547,150.41 = 611,826.16 : x
2. Step 2: Convert to fraction form
   1,121,123.78/1,547,150.41 = 611,826.16/x
3. Step 3: Cross multiply
   1,121,123.78x = 1,547,150.41 × 611,826.16
4. Step 4: Simplify right side
   1,121,123.78x = 946,587,094,292.73
5. Step 5: Solve for x
   x = 946,587,094,292.73/1,121,123.78
6. Step 6: Final answer
   x = 844,319.88