Finding the Fourth Proportional to 1,121,003.78, 1,681,507.49 and 897,783.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,121,003.78 : 1,681,507.49 = 897,783.98 : x
2. Step 2: Convert to fraction form
   1,121,003.78/1,681,507.49 = 897,783.98/x
3. Step 3: Cross multiply
   1,121,003.78x = 1,681,507.49 × 897,783.98
4. Step 4: Simplify right side
   1,121,003.78x = 1,509,630,473,875.55
5. Step 5: Solve for x
   x = 1,509,630,473,875.55/1,121,003.78
6. Step 6: Final answer
   x = 1,346,677.42