Finding the Fourth Proportional to 1,445,062.86, 2,168,097.30 and 646,428.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445,062.86 : 2,168,097.30 = 646,428.78 : x
2. Step 2: Convert to fraction form
   1,445,062.86/2,168,097.30 = 646,428.78/x
3. Step 3: Cross multiply
   1,445,062.86x = 2,168,097.30 × 646,428.78
4. Step 4: Simplify right side
   1,445,062.86x = 1,401,520,492,560.29
5. Step 5: Solve for x
   x = 1,401,520,492,560.29/1,445,062.86
6. Step 6: Final answer
   x = 969,868.18