Finding the Fourth Proportional to 1,565,858.76, 2,348,789.42 and 428,630.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,565,858.76 : 2,348,789.42 = 428,630.37 : x
2. Step 2: Convert to fraction form
   1,565,858.76/2,348,789.42 = 428,630.37/x
3. Step 3: Cross multiply
   1,565,858.76x = 2,348,789.42 × 428,630.37
4. Step 4: Simplify right side
   1,565,858.76x = 1,006,762,478,146.69
5. Step 5: Solve for x
   x = 1,006,762,478,146.69/1,565,858.76
6. Step 6: Final answer
   x = 642,945.91