Finding the Fourth Proportional to 2,117,401.53, 3,174,316.52 and 918,420.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117,401.53 : 3,174,316.52 = 918,420.72 : x
2. Step 2: Convert to fraction form
   2,117,401.53/3,174,316.52 = 918,420.72/x
3. Step 3: Cross multiply
   2,117,401.53x = 3,174,316.52 × 918,420.72
4. Step 4: Simplify right side
   2,117,401.53x = 2,915,358,059,214.19
5. Step 5: Solve for x
   x = 2,915,358,059,214.19/2,117,401.53
6. Step 6: Final answer
   x = 1,376,856.50