Finding the Fourth Proportional to 1,186,109.56, 1,778,897.49 and 545,799.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186,109.56 : 1,778,897.49 = 545,799.07 : x
2. Step 2: Convert to fraction form
   1,186,109.56/1,778,897.49 = 545,799.07/x
3. Step 3: Cross multiply
   1,186,109.56x = 1,778,897.49 × 545,799.07
4. Step 4: Simplify right side
   1,186,109.56x = 970,920,595,667.33
5. Step 5: Solve for x
   x = 970,920,595,667.33/1,186,109.56
6. Step 6: Final answer
   x = 818,575.81