Finding the Fourth Proportional to 1,011,621.78, 1,516,124.52 and 756,903.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011,621.78 : 1,516,124.52 = 756,903.78 : x
2. Step 2: Convert to fraction form
   1,011,621.78/1,516,124.52 = 756,903.78/x
3. Step 3: Cross multiply
   1,011,621.78x = 1,516,124.52 × 756,903.78
4. Step 4: Simplify right side
   1,011,621.78x = 1,147,560,380,138.69
5. Step 5: Solve for x
   x = 1,147,560,380,138.69/1,011,621.78
6. Step 6: Final answer
   x = 1,134,376.90