Finding the Fourth Proportional to 1,194,612.48, 1,791,866.34 and 384,978.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,194,612.48 : 1,791,866.34 = 384,978.78 : x
2. Step 2: Convert to fraction form
   1,194,612.48/1,791,866.34 = 384,978.78/x
3. Step 3: Cross multiply
   1,194,612.48x = 1,791,866.34 × 384,978.78
4. Step 4: Simplify right side
   1,194,612.48x = 689,830,517,496.27
5. Step 5: Solve for x
   x = 689,830,517,496.27/1,194,612.48
6. Step 6: Final answer
   x = 577,451.29