Finding the Fourth Proportional to 2,185,364.80, 3,015,582.72 and 1,218,404.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185,364.80 : 3,015,582.72 = 1,218,404.32 : x
2. Step 2: Convert to fraction form
   2,185,364.80/3,015,582.72 = 1,218,404.32/x
3. Step 3: Cross multiply
   2,185,364.80x = 3,015,582.72 × 1,218,404.32
4. Step 4: Simplify right side
   2,185,364.80x = 3,674,199,013,365.35
5. Step 5: Solve for x
   x = 3,674,199,013,365.35/2,185,364.80
6. Step 6: Final answer
   x = 1,681,274.91