Finding the Fourth Proportional to 1,294,196.10, 1,941,294.15 and 664,340.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,294,196.10 : 1,941,294.15 = 664,340.10 : x
2. Step 2: Convert to fraction form
   1,294,196.10/1,941,294.15 = 664,340.10/x
3. Step 3: Cross multiply
   1,294,196.10x = 1,941,294.15 × 664,340.10
4. Step 4: Simplify right side
   1,294,196.10x = 1,289,679,549,740.41
5. Step 5: Solve for x
   x = 1,289,679,549,740.41/1,294,196.10
6. Step 6: Final answer
   x = 996,510.15