Finding the Fourth Proportional to 1,605,817.31, 2,215,692.83 and 1,089,970.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605,817.31 : 2,215,692.83 = 1,089,970.43 : x
2. Step 2: Convert to fraction form
   1,605,817.31/2,215,692.83 = 1,089,970.43/x
3. Step 3: Cross multiply
   1,605,817.31x = 2,215,692.83 × 1,089,970.43
4. Step 4: Simplify right side
   1,605,817.31x = 2,415,039,658,309.48
5. Step 5: Solve for x
   x = 2,415,039,658,309.48/1,605,817.31
6. Step 6: Final answer
   x = 1,503,931.77