Finding the Fourth Proportional to 1,290,046.96, 1,924,185.82 and 1,120,231.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290,046.96 : 1,924,185.82 = 1,120,231.88 : x
2. Step 2: Convert to fraction form
   1,290,046.96/1,924,185.82 = 1,120,231.88/x
3. Step 3: Cross multiply
   1,290,046.96x = 1,924,185.82 × 1,120,231.88
4. Step 4: Simplify right side
   1,290,046.96x = 2,155,534,298,607.94
5. Step 5: Solve for x
   x = 2,155,534,298,607.94/1,290,046.96
6. Step 6: Final answer
   x = 1,670,895.99