Finding the Fourth Proportional to 1,200,456.66, 1,801,190.43 and 526,189.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,456.66 : 1,801,190.43 = 526,189.98 : x
2. Step 2: Convert to fraction form
   1,200,456.66/1,801,190.43 = 526,189.98/x
3. Step 3: Cross multiply
   1,200,456.66x = 1,801,190.43 × 526,189.98
4. Step 4: Simplify right side
   1,200,456.66x = 947,768,356,337.89
5. Step 5: Solve for x
   x = 947,768,356,337.89/1,200,456.66
6. Step 6: Final answer
   x = 789,506.52