Finding the Fourth Proportional to 1,680,808.50, 2,521,234.69 and 558,877.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680,808.50 : 2,521,234.69 = 558,877.50 : x
2. Step 2: Convert to fraction form
   1,680,808.50/2,521,234.69 = 558,877.50/x
3. Step 3: Cross multiply
   1,680,808.50x = 2,521,234.69 × 558,877.50
4. Step 4: Simplify right side
   1,680,808.50x = 1,409,061,339,063.28
5. Step 5: Solve for x
   x = 1,409,061,339,063.28/1,680,808.50
6. Step 6: Final answer
   x = 838,323.54