Finding the Fourth Proportional to 2,790,356.61, 4,183,406.01 and 1,272,978.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790,356.61 : 4,183,406.01 = 1,272,978.38 : x
2. Step 2: Convert to fraction form
   2,790,356.61/4,183,406.01 = 1,272,978.38/x
3. Step 3: Cross multiply
   2,790,356.61x = 4,183,406.01 × 1,272,978.38
4. Step 4: Simplify right side
   2,790,356.61x = 5,325,385,405,492.06
5. Step 5: Solve for x
   x = 5,325,385,405,492.06/2,790,356.61
6. Step 6: Final answer
   x = 1,908,496.35