Finding the Fourth Proportional to 1,089,404.52, 1,503,378.20 and 612,476.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089,404.52 : 1,503,378.20 = 612,476.52 : x
2. Step 2: Convert to fraction form
   1,089,404.52/1,503,378.20 = 612,476.52/x
3. Step 3: Cross multiply
   1,089,404.52x = 1,503,378.20 × 612,476.52
4. Step 4: Simplify right side
   1,089,404.52x = 920,783,848,179.86
5. Step 5: Solve for x
   x = 920,783,848,179.86/1,089,404.52
6. Step 6: Final answer
   x = 845,217.58