Finding the Fourth Proportional to 725,934.69, 1,089,123.57 and 371,197.89

Step by Step Solution

1. Step 1: Write the proportion equation
   725,934.69 : 1,089,123.57 = 371,197.89 : x
2. Step 2: Convert to fraction form
   725,934.69/1,089,123.57 = 371,197.89/x
3. Step 3: Cross multiply
   725,934.69x = 1,089,123.57 × 371,197.89
4. Step 4: Simplify right side
   725,934.69x = 404,280,371,133.27
5. Step 5: Solve for x
   x = 404,280,371,133.27/725,934.69
6. Step 6: Final answer
   x = 556,910.11