Finding the Fourth Proportional to 1,390,871.82, 1,919,274.03 and 787,259.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,390,871.82 : 1,919,274.03 = 787,259.82 : x
2. Step 2: Convert to fraction form
   1,390,871.82/1,919,274.03 = 787,259.82/x
3. Step 3: Cross multiply
   1,390,871.82x = 1,919,274.03 × 787,259.82
4. Step 4: Simplify right side
   1,390,871.82x = 1,510,967,327,388.47
5. Step 5: Solve for x
   x = 1,510,967,327,388.47/1,390,871.82
6. Step 6: Final answer
   x = 1,086,345.49