Finding the Fourth Proportional to 2,117,404.23, 3,174,320.39 and 918,423.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117,404.23 : 3,174,320.39 = 918,423.39 : x
2. Step 2: Convert to fraction form
   2,117,404.23/3,174,320.39 = 918,423.39/x
3. Step 3: Cross multiply
   2,117,404.23x = 3,174,320.39 × 918,423.39
4. Step 4: Simplify right side
   2,117,404.23x = 2,915,370,088,937.81
5. Step 5: Solve for x
   x = 2,915,370,088,937.81/2,117,404.23
6. Step 6: Final answer
   x = 1,376,860.43