Finding the Fourth Proportional to 1,549,990.55, 2,138,819.48 and 861,692.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,549,990.55 : 2,138,819.48 = 861,692.00 : x
2. Step 2: Convert to fraction form
   1,549,990.55/2,138,819.48 = 861,692.00/x
3. Step 3: Cross multiply
   1,549,990.55x = 2,138,819.48 × 861,692.00
4. Step 4: Simplify right side
   1,549,990.55x = 1,843,003,620,357.60
5. Step 5: Solve for x
   x = 1,843,003,620,357.60/1,549,990.55
6. Step 6: Final answer
   x = 1,189,041.85