Finding the Fourth Proportional to 1,271,019.96, 1,906,792.56 and 372,491.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271,019.96 : 1,906,792.56 = 372,491.10 : x
2. Step 2: Convert to fraction form
   1,271,019.96/1,906,792.56 = 372,491.10/x
3. Step 3: Cross multiply
   1,271,019.96x = 1,906,792.56 × 372,491.10
4. Step 4: Simplify right side
   1,271,019.96x = 710,263,258,146.22
5. Step 5: Solve for x
   x = 710,263,258,146.22/1,271,019.96
6. Step 6: Final answer
   x = 558,813.61