Finding the Fourth Proportional to 1,431,238.95, 1,975,112.61 and 777,868.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431,238.95 : 1,975,112.61 = 777,868.59 : x
2. Step 2: Convert to fraction form
   1,431,238.95/1,975,112.61 = 777,868.59/x
3. Step 3: Cross multiply
   1,431,238.95x = 1,975,112.61 × 777,868.59
4. Step 4: Simplify right side
   1,431,238.95x = 1,536,378,061,031.92
5. Step 5: Solve for x
   x = 1,536,378,061,031.92/1,431,238.95
6. Step 6: Final answer
   x = 1,073,460.21