Finding the Fourth Proportional to 1,326,123.86, 1,989,199.71 and 1,061,566.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,326,123.86 : 1,989,199.71 = 1,061,566.11 : x
2. Step 2: Convert to fraction form
   1,326,123.86/1,989,199.71 = 1,061,566.11/x
3. Step 3: Cross multiply
   1,326,123.86x = 1,989,199.71 × 1,061,566.11
4. Step 4: Simplify right side
   1,326,123.86x = 2,111,666,998,157.83
5. Step 5: Solve for x
   x = 2,111,666,998,157.83/1,326,123.86
6. Step 6: Final answer
   x = 1,592,360.31