Finding the Fourth Proportional to 1,018,819.98, 1,528,282.23 and 260,667.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,819.98 : 1,528,282.23 = 260,667.98 : x
2. Step 2: Convert to fraction form
   1,018,819.98/1,528,282.23 = 260,667.98/x
3. Step 3: Cross multiply
   1,018,819.98x = 1,528,282.23 × 260,667.98
4. Step 4: Simplify right side
   1,018,819.98x = 398,374,241,764.00
5. Step 5: Solve for x
   x = 398,374,241,764.00/1,018,819.98
6. Step 6: Final answer
   x = 391,015.34