Finding the Fourth Proportional to 3,992,007.78, 5,987,925.20 and 1,113,298.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,992,007.78 : 5,987,925.20 = 1,113,298.15 : x
2. Step 2: Convert to fraction form
   3,992,007.78/5,987,925.20 = 1,113,298.15/x
3. Step 3: Cross multiply
   3,992,007.78x = 5,987,925.20 × 1,113,298.15
4. Step 4: Simplify right side
   3,992,007.78x = 6,666,346,041,931.89
5. Step 5: Solve for x
   x = 6,666,346,041,931.89/3,992,007.78
6. Step 6: Final answer
   x = 1,669,923.11