Finding the Fourth Proportional to 1,123,386.21, 1,684,729.40 and 375,257.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,386.21 : 1,684,729.40 = 375,257.25 : x
2. Step 2: Convert to fraction form
   1,123,386.21/1,684,729.40 = 375,257.25/x
3. Step 3: Cross multiply
   1,123,386.21x = 1,684,729.40 × 375,257.25
4. Step 4: Simplify right side
   1,123,386.21x = 632,206,919,761.86
5. Step 5: Solve for x
   x = 632,206,919,761.86/1,123,386.21
6. Step 6: Final answer
   x = 562,768.99