Finding the Fourth Proportional to 1,003,978.07, 1,385,489.74 and 551,269.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003,978.07 : 1,385,489.74 = 551,269.07 : x
2. Step 2: Convert to fraction form
   1,003,978.07/1,385,489.74 = 551,269.07/x
3. Step 3: Cross multiply
   1,003,978.07x = 1,385,489.74 × 551,269.07
4. Step 4: Simplify right side
   1,003,978.07x = 763,777,633,536.89
5. Step 5: Solve for x
   x = 763,777,633,536.89/1,003,978.07
6. Step 6: Final answer
   x = 760,751.32