Finding the Fourth Proportional to 912,488.88, 1,368,966.72 and 379,832.88

Step by Step Solution

1. Step 1: Write the proportion equation
   912,488.88 : 1,368,966.72 = 379,832.88 : x
2. Step 2: Convert to fraction form
   912,488.88/1,368,966.72 = 379,832.88/x
3. Step 3: Cross multiply
   912,488.88x = 1,368,966.72 × 379,832.88
4. Step 4: Simplify right side
   912,488.88x = 519,978,571,881.75
5. Step 5: Solve for x
   x = 519,978,571,881.75/912,488.88
6. Step 6: Final answer
   x = 569,846.48