Finding the Fourth Proportional to 3,938,510.79, 5,907,764.16 and 1,243,106.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938,510.79 : 5,907,764.16 = 1,243,106.19 : x
2. Step 2: Convert to fraction form
   3,938,510.79/5,907,764.16 = 1,243,106.19/x
3. Step 3: Cross multiply
   3,938,510.79x = 5,907,764.16 × 1,243,106.19
4. Step 4: Simplify right side
   3,938,510.79x = 7,343,978,196,356.15
5. Step 5: Solve for x
   x = 7,343,978,196,356.15/3,938,510.79
6. Step 6: Final answer
   x = 1,864,658.65