Finding the Fourth Proportional to 1,166,359.37, 1,749,276.59 and 418,405.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,166,359.37 : 1,749,276.59 = 418,405.37 : x
2. Step 2: Convert to fraction form
   1,166,359.37/1,749,276.59 = 418,405.37/x
3. Step 3: Cross multiply
   1,166,359.37x = 1,749,276.59 × 418,405.37
4. Step 4: Simplify right side
   1,166,359.37x = 731,906,710,124.91
5. Step 5: Solve for x
   x = 731,906,710,124.91/1,166,359.37
6. Step 6: Final answer
   x = 627,513.90