Finding the Fourth Proportional to 827,746.82, 1,142,188.10 and 478,947.18

Step by Step Solution

1. Step 1: Write the proportion equation
   827,746.82 : 1,142,188.10 = 478,947.18 : x
2. Step 2: Convert to fraction form
   827,746.82/1,142,188.10 = 478,947.18/x
3. Step 3: Cross multiply
   827,746.82x = 1,142,188.10 × 478,947.18
4. Step 4: Simplify right side
   827,746.82x = 547,047,767,129.82
5. Step 5: Solve for x
   x = 547,047,767,129.82/827,746.82
6. Step 6: Final answer
   x = 660,887.79