Finding the Fourth Proportional to 870,967.25, 1,201,953.83 and 478,505.27

Step by Step Solution

1. Step 1: Write the proportion equation
   870,967.25 : 1,201,953.83 = 478,505.27 : x
2. Step 2: Convert to fraction form
   870,967.25/1,201,953.83 = 478,505.27/x
3. Step 3: Cross multiply
   870,967.25x = 1,201,953.83 × 478,505.27
4. Step 4: Simplify right side
   870,967.25x = 575,141,237,138.18
5. Step 5: Solve for x
   x = 575,141,237,138.18/870,967.25
6. Step 6: Final answer
   x = 660,347.72