Finding the Fourth Proportional to 745,871.05, 1,118,916.83 and 272,445.69

Step by Step Solution

1. Step 1: Write the proportion equation
   745,871.05 : 1,118,916.83 = 272,445.69 : x
2. Step 2: Convert to fraction form
   745,871.05/1,118,916.83 = 272,445.69/x
3. Step 3: Cross multiply
   745,871.05x = 1,118,916.83 × 272,445.69
4. Step 4: Simplify right side
   745,871.05x = 304,844,067,801.96
5. Step 5: Solve for x
   x = 304,844,067,801.96/745,871.05
6. Step 6: Final answer
   x = 408,708.81