Finding the Fourth Proportional to 2,223,990.58, 3,069,262.98 and 1,257,128.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223,990.58 : 3,069,262.98 = 1,257,128.80 : x
2. Step 2: Convert to fraction form
   2,223,990.58/3,069,262.98 = 1,257,128.80/x
3. Step 3: Cross multiply
   2,223,990.58x = 3,069,262.98 × 1,257,128.80
4. Step 4: Simplify right side
   2,223,990.58x = 3,858,458,886,931.82
5. Step 5: Solve for x
   x = 3,858,458,886,931.82/2,223,990.58
6. Step 6: Final answer
   x = 1,734,925.91