Finding the Fourth Proportional to 1,407,598.56, 2,111,073.12 and 839,139.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407,598.56 : 2,111,073.12 = 839,139.12 : x
2. Step 2: Convert to fraction form
   1,407,598.56/2,111,073.12 = 839,139.12/x
3. Step 3: Cross multiply
   1,407,598.56x = 2,111,073.12 × 839,139.12
4. Step 4: Simplify right side
   1,407,598.56x = 1,771,484,040,172.45
5. Step 5: Solve for x
   x = 1,771,484,040,172.45/1,407,598.56
6. Step 6: Final answer
   x = 1,258,515.10