Finding the Fourth Proportional to 1,307,597.94, 1,803,756.60 and 1,215,123.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,307,597.94 : 1,803,756.60 = 1,215,123.03 : x
2. Step 2: Convert to fraction form
   1,307,597.94/1,803,756.60 = 1,215,123.03/x
3. Step 3: Cross multiply
   1,307,597.94x = 1,803,756.60 × 1,215,123.03
4. Step 4: Simplify right side
   1,307,597.94x = 2,191,786,185,174.50
5. Step 5: Solve for x
   x = 2,191,786,185,174.50/1,307,597.94
6. Step 6: Final answer
   x = 1,676,192.75