Finding the Fourth Proportional to 1,898,961.88, 2,620,567.20 and 1,039,522.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898,961.88 : 2,620,567.20 = 1,039,522.72 : x
2. Step 2: Convert to fraction form
   1,898,961.88/2,620,567.20 = 1,039,522.72/x
3. Step 3: Cross multiply
   1,898,961.88x = 2,620,567.20 × 1,039,522.72
4. Step 4: Simplify right side
   1,898,961.88x = 2,724,139,143,686.78
5. Step 5: Solve for x
   x = 2,724,139,143,686.78/1,898,961.88
6. Step 6: Final answer
   x = 1,434,541.25