Finding the Fourth Proportional to 1,224,074.06, 1,689,239.78 and 672,840.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224,074.06 : 1,689,239.78 = 672,840.82 : x
2. Step 2: Convert to fraction form
   1,224,074.06/1,689,239.78 = 672,840.82/x
3. Step 3: Cross multiply
   1,224,074.06x = 1,689,239.78 × 672,840.82
4. Step 4: Simplify right side
   1,224,074.06x = 1,136,589,478,751.82
5. Step 5: Solve for x
   x = 1,136,589,478,751.82/1,224,074.06
6. Step 6: Final answer
   x = 928,529.99