Finding the Fourth Proportional to 2,117,380.27, 3,174,284.93 and 918,399.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117,380.27 : 3,174,284.93 = 918,399.90 : x
2. Step 2: Convert to fraction form
   2,117,380.27/3,174,284.93 = 918,399.90/x
3. Step 3: Cross multiply
   2,117,380.27x = 3,174,284.93 × 918,399.90
4. Step 4: Simplify right side
   2,117,380.27x = 2,915,262,945,395.20
5. Step 5: Solve for x
   x = 2,915,262,945,395.20/2,117,380.27
6. Step 6: Final answer
   x = 1,376,825.40