Finding the Fourth Proportional to 1,419,601.55, 2,128,624.72 and 577,201.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419,601.55 : 2,128,624.72 = 577,201.55 : x
2. Step 2: Convert to fraction form
   1,419,601.55/2,128,624.72 = 577,201.55/x
3. Step 3: Cross multiply
   1,419,601.55x = 2,128,624.72 × 577,201.55
4. Step 4: Simplify right side
   1,419,601.55x = 1,228,645,487,752.32
5. Step 5: Solve for x
   x = 1,228,645,487,752.32/1,419,601.55
6. Step 6: Final answer
   x = 865,486.16