Finding the Fourth Proportional to 648,139.95, 894,299.59 and 372,444.54

Step by Step Solution

1. Step 1: Write the proportion equation
   648,139.95 : 894,299.59 = 372,444.54 : x
2. Step 2: Convert to fraction form
   648,139.95/894,299.59 = 372,444.54/x
3. Step 3: Cross multiply
   648,139.95x = 894,299.59 × 372,444.54
4. Step 4: Simplify right side
   648,139.95x = 333,077,003,081.59
5. Step 5: Solve for x
   x = 333,077,003,081.59/648,139.95
6. Step 6: Final answer
   x = 513,896.74