Finding the Fourth Proportional to 919,196.15, 1,377,196.35 and 645,060.98

Step by Step Solution

1. Step 1: Write the proportion equation
   919,196.15 : 1,377,196.35 = 645,060.98 : x
2. Step 2: Convert to fraction form
   919,196.15/1,377,196.35 = 645,060.98/x
3. Step 3: Cross multiply
   919,196.15x = 1,377,196.35 × 645,060.98
4. Step 4: Simplify right side
   919,196.15x = 888,375,627,183.42
5. Step 5: Solve for x
   x = 888,375,627,183.42/919,196.15
6. Step 6: Final answer
   x = 966,470.14